The Lewis LHT Axial Cylinder 4-Piston Hydraulic Disc Brake is a masterclass in precision and durability, designed to meet the demands of trail, all-mountain, and enduro riders. Its CNC-machined 7075 T6 aluminum caliper ensures exceptional rigidity and lightweight performance, while the 4-piston configuration delivers outstanding stopping power with smooth modulation for technical descents.

Premium titanium hardware is used throughout the brake kit, offering unmatched strength-to-weight efficiency and superior corrosion resistance, enhancing durability over time.

The advanced anti-leak oil system simplifies maintenance, ensuring consistent hydraulic pressure and a clean installation process. Independent cooling fins further optimize heat dissipation by increasing surface area, reducing the risk of brake fade on long rides.

With tool-free lever reach adjustment, bite point adjustment & lever ratio adjustment the LHT brake system from Lewis Bike ensures a fully customizable braking experience, combining comfort, reliability, and control. With all these features combined this high-performance brake system is built for riders pushing their limits on every trail.

These brakes are sold in the Right/Rear and Left/Front configuration. You can swap the brake lines if you'd like to swap the configuration to Right/Front and Left/Rear.

Lewis FM-F Adapter – Flat Mount to Flat Mount

Precision-machined flat mount brake adapter for lightweight strength, exact fitment, and flexible rotor sizing.

The Lewis FM-F Adapter is designed for riders and builders who want a clean, reliable way to fine-tune a flat mount disc brake setup. Machined from premium 7075-T6 aluminum using integrated CNC cutting, this adapter delivers excellent stiffness, precise alignment, and minimal added weight. At just 10 g, it is an ideal choice for performance-focused road, gravel, and lightweight build applications where strength and weight both matter.

Built primarily for front fork flat mount applications, the Lewis FM-F adapter gives you the flexibility to maintain your current rotor size or step up to a larger rotor for added braking power and improved heat control. Whether you are optimizing lever feel, increasing stopping authority, or dialing in a custom brake setup, this adapter helps you achieve a more refined and confidence-inspiring braking system.

FM-F Options

• FM-F Ф+0: Standard flat mount adapter configuration. Rotor diameter remains unchanged.
• FM-F Ф+20: Increases supported rotor size by 20 mm. For example, a fork designed around a 140 mm rotor can be adapted to run a 160 mm rotor.

Features & Benefits

• 7075-T6 Aluminum Construction: High-strength alloy provides excellent durability and stiffness while keeping weight extremely low.
• Precision CNC Machining: Integrated CNC cutting helps ensure a clean finish, accurate tolerances, and a precise fit for dependable brake alignment.
• Lightweight 10 g Design: Adds minimal weight to the bike, making it ideal for premium road, gravel, and race-oriented builds.
• Flat Mount to Flat Mount Compatibility: Designed to work within flat mount brake systems for clean integration and proper caliper positioning.
• Rotor Size Flexibility: Available in Ф+0 and Ф+20 options so you can match your setup to your braking needs.
• Improved Braking Setup Control: Makes it easier to optimize rotor sizing for better heat management, stronger braking performance, or specific frame and fork requirements.
• Performance-Focused Application: Well suited for riders building lightweight, responsive, and race-ready braking systems.

Why Rotor Size Matters

Choosing the correct flat mount brake adapter can directly affect braking feel and performance. Running a larger rotor can improve leverage, increase stopping power, and help manage heat more effectively on long descents or under repeated hard braking. The Lewis FM-F adapter gives riders and mechanics a simple way to adapt rotor sizing while maintaining a clean, high-performance flat mount setup.

Specifications

• Product Name: Lewis FM-F Adapter
• Adapter Type: Flat Mount to Flat Mount
• Material: 7075-T6 Aluminum
• Manufacturing Process: Integrated CNC Cutting
• Mounting Seat: 70 mm (FM-F specification)
• Fitment Note: Typically used for front forks
• Available Specifications: Ф+0 and Ф+20
• Weight: 10 g
• Colors: Black, Gunsmoke, Purple, Orange, Gold, Pink
• Application: Road, gravel, and performance bikes

Ideal For

The Lewis FM-F Flat Mount Adapter is ideal for riders, mechanics, and bike builders looking for a lightweight flat mount brake adapter that offers precise fitment, premium construction, and flexible rotor sizing options. It is especially well suited for road bikes, gravel bikes, and high-performance builds where clean integration and dependable braking setup matter.

Lewis SLR Lightweight Flat Mount Road Brake Caliper

Ultra-light construction, larger titanium pistons, and precision braking performance for serious road riders.

The Lewis SLR is the lightest flat mount road brake caliper Lewis has produced, built for hill-climb bikes, premium road builds, and riders focused on reducing weight without giving up braking confidence. Precision CNC-machined from 7075-T6 aluminum and equipped with titanium pistons and titanium hardware, the SLR weighs just 68.5 g for the caliper body alone. The result is an exceptionally light flat mount road disc brake caliper designed for performance-driven builds where every gram matters.

Low weight is only part of the story. The Lewis SLR uses dual 21 mm titanium pistons, which are larger than the 19 mm pistons commonly found in many stock road calipers. That larger piston size helps deliver stronger, more consistent braking force with improved control at the lever. Lewis also engineered a generous 0.3 mm pad clearance per side, helping reduce rotor rub, unwanted brake noise, and the constant pad drag issues that can frustrate riders on modern aero road bikes.

Why Choose the Lewis SLR?

• Extremely Lightweight Design: At just 68.5 g for the caliper body, the SLR is a serious upgrade for riders building lightweight road, climbing, and race bikes.
• Larger 21 mm Titanium Pistons: Oversized pistons improve braking power and lever consistency while titanium helps reduce heat transfer into the brake fluid.
• Improved Heat Management: Titanium pistons act as a thermal barrier, helping control heat buildup on long descents and reducing the chance of fluid overheating.
• Reduced Rotor Rub: The optimized piston and return spring design, combined with wider pad clearance, helps keep the rotor running quieter and freer.
• Choice of Fluid System: Available in both Mineral Oil and DOT 5.1 versions so you can match the caliper to your lever setup.
• Premium Materials Throughout: CNC-machined 7075-T6 aluminum body with titanium hardware for strength, precision, and reduced weight.
• Flat Mount Road Fitment: Designed for modern flat mount road and gravel applications using 34 mm flat mount spacing.

Features & Benefits

• 7075-T6 Aluminum Caliper Body: High-strength aluminum construction keeps weight low while maintaining the rigidity needed for precise braking feel.
• Titanium Pistons: Larger titanium pistons improve power delivery and help isolate heat for more reliable braking under heavy use.
• Titanium Hardware: Lightweight fasteners and fittings further reduce system weight without compromising the premium feel of the caliper.
• 0.3 mm Pad Clearance Per Side: Increased clearance helps minimize pad drag, brake rub, and unwanted noise while making wheel installation easier.
• Patented Return Spring and Piston Design: Helps ensure full pad retraction for quieter operation and a more refined riding experience.
• Fluid-Specific Seal Options: Lets riders pair the correct caliper with Shimano, Campagnolo, Magura, SRAM, or Avid lever systems.

Technical Specifications

• Product Name: Lewis SLR
• Product Type: Lightweight flat mount road brake caliper
• Material: CNC 7075-T6 Aluminum
• Pistons: 2 x 21 mm Titanium
• Hardware: Titanium bolts and fittings
• Mount Standard: Flat Mount (34 mm spacing) Matching Adapter Here
• Pad Compatibility: SRAM Level / Elixir / Lewis VP-30 / Lewis TP-30 / Lewis LP-30
• Weight: 68.5 g (caliper body only)
• Colors: Black, Silver, Pink, Gold, Orange, Purple

Who It Is For

The Lewis SLR flat mount caliper is ideal for hill-climb riders, weight-conscious road cyclists, performance gravel riders, and premium custom bike builds where lower weight, better brake feel, and reduced rotor rub matter. It is especially well suited for riders looking for a lightweight road disc brake caliper with more braking power than a typical stock setup.

Mechanic's Data: Torque Specifications

The SLR includes two hose fitting types. Identify which fitting you are using before tightening, as over-torquing can damage lightweight threads and fittings.

Configuration Note: Fluid Type

Select the correct version for your brake levers:

• Mineral Oil Version: Compatible with Shimano, Campagnolo, and Magura systems.
• DOT Version: Compatible with SRAM and Avid systems.

Warning: Using the wrong brake fluid will permanently damage the internal seals and void the warranty.

Sumart GP-2004 Dual Lock-On Bike Grips

Secure grip, all-day comfort, and confident control for trail, commuting, and everyday riding.

The Sumart GP-2004 Dual Lock-On Bike Grips are designed for riders who want a more secure handlebar feel, better hand comfort, and dependable grip in changing conditions. Built with a soft rubber compound, an ergonomic profile, and dual lock-on aluminum collars, these grips are made to stay firmly in place while delivering the comfort and traction riders need on everything from rough singletrack to daily commutes.

Whether you are upgrading worn stock grips or dialing in a new bike build, the GP-2004 offers a practical balance of comfort, control, and easy installation. The textured surface pattern is designed to improve traction in both wet and dry conditions, while the contoured grip shape helps reduce hand fatigue on longer rides. For riders who value predictable bar feel and a secure connection to the bike, a quality lock-on grip can make a noticeable difference.

Key Features & Benefits

• Dual Lock-On Security: Aluminum lock rings at both ends help keep the grips firmly in place, reducing the chance of twisting or slipping during hard riding.
• Ergonomic Comfort: The contoured shape and soft-compound rubber are designed to improve comfort and help reduce hand fatigue over longer rides.
• Textured Traction Pattern: Block-pattern surface helps improve grip in dry, wet, and muddy conditions for more confident bar control.
• Soft Rubber Compound: Provides a comfortable hand feel while maintaining the grip needed for trail, gravel, commuting, and general bike use.
• Fits Standard 22.2 mm Handlebars: Compatible with the standard mountain bike and many flat-bar handlebar diameters for broad fitment.
• Adhesive-Free Installation: Installs with standard Allen keys, with no glue required, making replacement and service easier.
• Multiple Color Options: Available in Black, Red, Blue, Purple, Orange, and Green to match a wide range of bike builds.

Why Choose Lock-On Bike Grips?

A quality lock-on bike grip offers more security than push-on grips by reducing unwanted movement and making installation simpler. For riders pushing hard on trails, riding in wet weather, or just wanting a more reliable handlebar setup, dual lock-on grips provide a more secure feel and easier maintenance. The Sumart GP-2004 is built to give riders better bar control, more comfort, and a cleaner installation experience.

Specifications

• Model Number: GP-2004
• Grip Type: Dual Lock-On
• Clamp Material: Anodized Aluminum
• Grip Material: Soft-Compound Rubber
• Bar Compatibility: Standard 22.2 mm handlebars
• Color Options: Black, Red, Blue, Purple, Orange, Green

Ideal For

The Sumart GP-2004 Dual Lock-On Bike Grips are ideal for mountain bikers, commuters, gravel riders, and general cyclists looking for a comfortable lock-on grip with reliable traction and secure fitment. They are especially useful for riders who want better hand comfort, improved control, and a grip that stays put during aggressive or all-weather riding.

Upgrade your cockpit with the Sumart GP-2004, a dependable set of dual lock-on bike grips built for comfort, control, and long-term reliability.

Lewis Bike Matchmaker Adapter

Clean up your cockpit and mount compatible controls from a single clamp point.

The Lewis Bike Matchmaker Adapter is designed to simplify handlebar setup by allowing your Lewis brake lever and a compatible SRAM shifter or control to mount from a single clamp interface. By combining multiple controls into one mounting point, this adapter helps reduce cockpit clutter, improve ergonomics, and create a cleaner, more organized bar setup.

Ideal for modern mountain bike and trail bike builds, the Lewis Matchmaker Adapter helps riders position controls more precisely while reducing the number of separate clamps on the handlebar. That means a tidier appearance, more room on the bars, and easier access to shifters, dropper remotes, and brake levers. It is a practical upgrade for riders who want a more refined and efficient cockpit layout.

Key Features & Benefits

• Single-Clamp Cockpit Integration: Mounts compatible controls from one clamp location to reduce handlebar clutter and simplify setup.
• Designed for Lewis Brake Systems: Built for compatibility with Lewis brake lever setups for a clean, secure fit.
• SRAM Shifter Compatibility: Allows integration of a compatible SRAM shifter or related control with your brake lever setup.
• Improved Ergonomics: Helps position controls closer together for a cleaner feel and easier access while riding.
• Cleaner Bar Layout: Reduces the number of separate handlebar clamps for a more organized cockpit appearance.
• Easy Installation: Designed for straightforward setup and secure attachment.

Left and Right Side Options

• Left Option: For the left side of the handlebar. Commonly used for a dropper post remote or other left-side control.
• Right Option: For the right side of the handlebar. Commonly used for a SRAM shifter or other right-side control.

Why Use a Matchmaker Adapter?

A bike matchmaker adapter helps streamline the cockpit by combining controls into a single mounting system. This can improve handlebar ergonomics, free up bar space, and create a cleaner setup that is easier to adjust and maintain. For riders building a modern trail, enduro, or mountain bike cockpit, a Lewis matchmaker adapter is a simple way to improve both function and appearance.

Specifications

• Product Name: Lewis Bike Matchmaker Adapter
• Compatibility: Lewis brake systems
• Function: Combines brake lever and compatible control into a single clamp setup
• Side Options: Left and Right
• Typical Left-Side Use: Dropper lever
• Typical Right-Side Use: SRAM shifter
• Application: Mountain bike and performance cockpit setups

Ideal For

The Lewis Bike Matchmaker Adapter is ideal for riders who want a cleaner cockpit, fewer handlebar clamps, and improved control placement. It is especially useful for mountain bikers and trail riders running Lewis brakes with a compatible SRAM shifter or dropper remote.

Lewis Shimano I-Spec EV Direct Mount Adapter

Clean up your cockpit with a lightweight direct-mount solution for compatible Lewis brakes and Shimano I-Spec EV shifters.

The Lewis Shimano I-Spec EV Direct Mount Adapter is designed to integrate a compatible Shimano I-Spec EV shifter directly with select Lewis brake levers, creating a cleaner, more ergonomic cockpit with fewer separate clamps on the handlebar. Built specifically for Lewis LH4, LHT, and LHP brake kits, this adapter helps bring your controls into a more compact and refined layout for improved bar organization and easier access while riding.

Precision CNC-machined from 7075-T6 aluminum, this one-piece adapter provides accurate alignment, low weight, and dependable strength without adding unnecessary bulk. At just 5.5 g, it is an ideal cockpit upgrade for riders who want secure shifter integration, a more streamlined handlebar setup, and a premium fit-and-finish on trail, enduro, or performance-oriented builds.

Key Features & Benefits

• Designed for Lewis LH4, LHT, and LHP Brakes: Built specifically to work with these compatible Lewis brake kits for proper integration and fit.
• Shimano I-Spec EV Compatibility: Allows a compatible Shimano I-Spec EV shifter to mount directly alongside the brake lever for a cleaner cockpit layout.
• Single-Mount Cockpit Setup: Reduces handlebar clutter by combining controls into one mounting solution instead of multiple separate clamps.
• Precision CNC-Machined 7075-T6 Aluminum: High-strength aluminum construction offers excellent durability, precise fitment, and low weight.
• Ultra-Light 5.5 g Weight: Adds minimal weight to the bike while delivering a tidy and secure cockpit configuration.
• One-Piece Construction: Supports a stable, slip-resistant interface for dependable control positioning.
• Available in Two Finishes: Offered in Silver and Black to better match a range of bike builds.

Important Compatibility Note

Not compatible with Lewis AE or Lewis LV brakes.

Why Use a Direct Mount Adapter?

A direct mount shifter adapter helps create a cleaner and more functional cockpit by reducing the number of separate clamps on the handlebar. This can improve ergonomics, free up bar space, and make it easier to position the shifter and brake lever exactly where you want them. For riders using compatible Lewis brakes and Shimano I-Spec EV shifters, this adapter is a simple upgrade that improves both appearance and control layout.

Specifications

• Product Name: Lewis Shimano I-Spec EV Direct Mount Adapter
• Brake Compatibility: Lewis LH4, LHT, and LHP brake kits
• Shifter Compatibility: Shimano I-Spec EV
• Not Compatible With: Lewis AE and Lewis LV brakes
• Material: 7075-T6 Aluminum
• Manufacturing Process: CNC Machined
• Construction: One-piece design
• Weight: 5.5 g
• Color Options: Silver, Black

Ideal For

The Lewis Shimano I-Spec EV Direct Mount Adapter is ideal for riders who want a cleaner mountain bike cockpit, fewer handlebar clamps, and a more integrated brake-and-shifter setup. It is especially well suited for trail, enduro, and performance builds using compatible Lewis LH4, LHT, or LHP brakes with a Shimano I-Spec EV shifter.

Lewis VP Series Carbon-Ceramic Brake Pads

Fade-resistant, quiet, and built for high-speed riding where braking consistency matters.

The Lewis VP Series Brake Pads are engineered for riders who demand strong, predictable braking on long descents and under repeated heavy load. Made from an advanced carbon-ceramic brake pad compound, VP pads are designed to deliver powerful stopping force, high heat resistance, and ultra-low noise across aggressive trail, enduro, downhill, and e-MTB riding. When braking performance needs to stay consistent lap after lap, the VP Series is built to keep control sharp and fade in check.

Unlike standard compounds that can become noisy or inconsistent as heat builds, the VP Series is designed to maintain a more stable brake feel during sustained braking. That makes these pads especially well suited for riders pushing hard on technical descents, heavier bikes, and high-speed terrain where brake temperature, modulation, and reliability all matter.

Choose the Correct VP Pad for Your Caliper

• VP-30: 30 mm width, with a pair weight of 20 g. Designed for 2-piston Lewis calipers including Lewis LV2, BB2, SL, and SLR. Best suited for XC and trail riders who want low weight, smooth modulation, and efficient braking performance.
• VP-37: 36.9 mm width, with a pair weight of 26 g. Compatible with 4-piston Lewis calipers including Lewis LV4, LH4, and LHP-S4. A strong choice for enduro riders needing more power and stability under heavy braking loads.
• VP-40: 40 mm width, with a pair weight of 28 g. Fits large-piston Lewis calipers including Lewis LHT, LHP-U4, and AX. Built for maximum heat capacity and braking torque in downhill and e-MTB applications.

Key Features & Benefits

• Carbon-Ceramic Compound: Designed for high heat tolerance, strong friction performance, and more repeatable brake feel under demanding use.
• Fade-Resistant Performance: Helps maintain braking consistency during long descents and repeated hard braking.
• Powerful Stopping Force: Increased friction supports stronger braking with less lever effort when conditions get steep and speeds rise.
• Ultra-Quiet Operation: Built to reduce brake noise and vibration for a more controlled, refined riding experience.
• Long Service Life: Engineered for durability and sustained performance in aggressive riding conditions.
• Caliper-Specific Fitment: Multiple pad widths are available so riders can choose the correct option for their exact Lewis brake caliper.

Why Choose Lewis VP Series Pads?

If you are dealing with brake fade on long descents, excessive pad noise, or inconsistent braking under race pace, the Lewis VP Series is built to address those problems directly. These high-performance mountain bike brake pads are designed for riders who need dependable braking force, lower noise, and better heat control in aggressive riding conditions. From trail riding to full downhill use, VP pads are made to keep braking performance more stable when the demands on the system increase.

Ideal For

The Lewis VP Series Carbon-Ceramic Brake Pads are ideal for trail, enduro, downhill, and e-MTB riders looking for a quiet, fade-resistant brake pad with strong power and reliable performance under heat. With multiple pad sizes available, riders can choose the option that best matches their caliper setup and braking demands.

Available Options

• VP-30: For Lewis LV2, BB2, SL, SLR
• VP-37: For Lewis LV4, LH4, LHP-S4
• VP-40: For Lewis LHT, LHP-U4, AX

Lewis VP Series Carbon-Ceramic Brake Pads

Fade-resistant, quiet, and built for aggressive riding where braking consistency matters most.

The Lewis VP Series Brake Pads are engineered for riders who demand dependable braking during long descents, repeated hard stops, and high-speed riding. Made from an advanced carbon-ceramic brake pad compound, VP pads are designed to provide powerful stopping force, strong heat resistance, and ultra-low noise in demanding trail conditions. They are an excellent choice for aggressive trail, enduro, downhill, and e-MTB riding where brake control, fade resistance, and quiet performance all matter.

As brake temperatures rise, many pad compounds can become noisy, inconsistent, or less confidence-inspiring. The VP Series is built to maintain a more stable brake feel under sustained load, helping riders keep better control on technical terrain, steep descents, and heavier bikes. For riders pushing braking systems harder than normal, these pads are designed to deliver a more composed and repeatable experience.

Choose the Correct VP Pad for Your Caliper

• VP-30: 30 mm width, with a pair weight of 20 g. Designed for 2-piston Lewis calipers including Lewis LV2, BB2, SL, and SLR. Best suited for XC and trail riders who value low weight, smooth modulation, and efficient braking feel.
• VP-37: 36.9 mm width, with a pair weight of 26 g. Compatible with 4-piston Lewis calipers including Lewis LV4, LH4, and LHP-S4. A strong option for enduro riding where additional braking power and stability are needed under heavier loads.
• VP-40: 40 mm width, with a pair weight of 28 g. Fits large-piston Lewis calipers including Lewis LHT and LHP-U4. Built for maximum heat capacity and braking torque in downhill and e-MTB applications.

Key Features & Benefits

• Carbon-Ceramic Compound: Designed for high heat tolerance, strong friction performance, and more repeatable brake feel under demanding use.
• Fade-Resistant Performance: Helps maintain braking consistency during long descents and repeated hard braking.
• Powerful Braking Force: Increased friction supports stronger stopping power with less lever effort.
• Ultra-Quiet Operation: Engineered to reduce brake noise, even during sustained braking.
• Lightweight and Durable: Built to combine low weight with long-lasting performance in aggressive riding conditions.
• Caliper-Specific Sizing: Tailored widths help ensure proper fit and compatibility with your specific Lewis caliper.

Why Choose Lewis VP Series Pads?

If you are fighting brake fade on long descents, dealing with noisy pads, or demanding more reliable performance during enduro or downhill riding, the Lewis VP Series is built for that use case. These high-performance mountain bike brake pads are designed to deliver stronger, quieter, and more stable braking under heat and load. For riders who want more control and less inconsistency when conditions get severe, VP pads are a serious upgrade.

Ideal For

The Lewis VP Series Carbon-Ceramic Brake Pads are ideal for XC, trail, enduro, downhill, and e-MTB riders who want a quiet, fade-resistant brake pad with strong power and dependable performance under heat. With multiple sizes available, riders can choose the option that best matches their caliper and riding style.

Available Options

• VP-30: For Lewis LV2, BB2, SL, SLR
• VP-37: For Lewis LV4, LH4, LHP-S4
• VP-40: For Lewis LHT, LHP-U4

Lewis FX CNC Stem

Extreme precision, maximum control, and DH-inspired stiffness in a lightweight 35 mm cockpit stem.

The Lewis FX CNC Stem is built for riders who want sharp steering response, front-end stiffness, and long-term durability without the extra weight of a full downhill-only cockpit setup. Precision-machined from 7075-T6 aluminum and assembled with stainless steel bolts, the FX is designed to deliver confident handling for aggressive trail, enduro, and high-speed descending.

With a 70 mm clamping width, 35 mm handlebar bore, and a reinforced single-end locking design, the FX Stem is engineered to improve cockpit rigidity while also distributing clamping forces more effectively across the bar. The result is a more planted steering feel, better front-end precision, and reduced stress at the handlebar interface for improved long-term reliability.

Key Features & Benefits

• CNC-Machined 7075-T6 Aluminum: Premium aluminum construction provides an excellent strength-to-weight ratio for aggressive riding without unnecessary bulk.
• Reinforced Single-End Locking Design: Designed to increase end-face strength and reduce stress concentration, helping improve durability and installation consistency.
• Larger Stainless Steel Hardware: Oversized bolt design helps increase stem rigidity and maintain a more secure clamping interface under hard riding loads.
• 70 mm Clamping Width: Wider than many standard stems, helping deliver a stiffer and more stable front-end feel for precise steering at speed.
• 15 mm Contact Width: Wider unilateral contact surface helps reduce stress between the stem and handlebar, which may support bar longevity and improve load distribution.
• 35 mm Bar Clamp: Built for modern oversized cockpit setups where steering precision and front-end stiffness are priorities.
• Trail-to-Enduro Ready: Designed for riders who want DH-style steering confidence in a lighter package suited for aggressive trail and enduro use.

Ride Feel & Performance

• Fast, precise steering response
• High front-end stiffness for aggressive riding
• Stable handling at speed
• Lightweight construction with gravity-oriented strength
• Well suited for trail, enduro, and technical descending

The Lewis FX Stem is made for riders who want a direct, confident steering feel without giving up the lighter weight and responsiveness expected from a modern aggressive trail or enduro build.

Why a Wider Stem Clamp Matters

A wider stem faceplate and clamp area can help improve front-end rigidity and distribute clamping forces more evenly across the handlebar. For riders pushing hard through rough terrain, cornering aggressively, or riding at speed, that can translate to a more controlled and predictable cockpit feel. The Lewis FX CNC Stem is designed around that principle, combining a wider clamp profile with premium materials to deliver a more stable and confidence-inspiring ride feel.

Specifications

• Product Name: Lewis FX CNC Stem
• Material: CNC 7075-T6 Aluminum
• Clamp Width: 70 mm
• Contact Width: 15 mm
• Center Distance: 40 mm
• Stack Height: 40 mm
• Fork Bore: 28.6 mm
• Handlebar Bore: 35 mm
• Bolts: Stainless Steel
• Weight: 152 g
• Color Options: Black, Silver, Purple, Blue, Orange, Golden Jade, Nebula

Ideal For

The Lewis FX Stem is ideal for riders building a 35 mm trail or enduro cockpit and looking for a lightweight CNC stem with strong steering precision and high-speed stability. It is especially well suited for aggressive trail riders, enduro racers, and riders who want a more planted front end without stepping up to a heavier downhill stem.

Blending stiffness, precision, durability, and premium CNC construction, the Lewis FX CNC Stem is a strong choice for riders who want a modern aggressive stem with real performance benefits on the trail.

Lewis ALU MTB Chainring

Lightweight 7075 aluminum chainrings built for strength, wear resistance, and confident chain retention on aggressive MTB setups.

The Lewis ALU MTB Chainring is designed for riders who want a durable, lightweight direct-mount chainring that can handle aggressive trail and mountain bike use. Precision-machined from 7075 aluminum, each chainring is finished with a specialized hard-anodized coating designed to improve wear resistance and long-term durability. The result is a performance-focused MTB chainring built to maintain tooth integrity, resist abrasion, and perform reliably in demanding riding conditions.

Available in both SRAM 3-bolt and 8-bolt mounting options, the Lewis ALU MTB Chainring is offered in multiple tooth counts and offsets to help riders match the chainring to their crankset and drivetrain layout. Its lightweight hollow-support design helps reduce weight while maintaining the stiffness needed for technical terrain, strong pedaling loads, and hard trail use.

Available Options

• 3-Bolt: 30T (3 mm offset), 34T (3 mm offset)
• 8-Bolt: 34T (3 mm offset or 6 mm offset)

Features & Benefits

• 7075 Aluminum Construction: High-strength aluminum provides an excellent balance of stiffness, durability, and low weight for aggressive MTB use.
• Enhanced Hard-Anodized Finish: Wear-resistant coating is designed to improve surface durability and help extend chainring life in harsh riding conditions.
• Optimized Tooth Profile: Positive and negative tooth shaping is engineered to improve chain retention and promote smoother running over rough terrain.
• Direct-Mount Compatibility Options: Available in SRAM 3-bolt and 8-bolt configurations to suit different crank and drivetrain setups.
• Weight-Saving Hollow Design: Internal support structure reduces unnecessary mass while preserving chainring strength.
• Built for Technical Riding: Designed to handle high pedaling loads, rough terrain, and aggressive mountain bike riding styles.

Why Chainring Design Matters

A quality mountain bike chainring affects more than just gearing. Tooth profile, material quality, offset, and surface hardness all influence chain retention, drivetrain wear, and long-term performance. The Lewis ALU MTB Chainring is built to provide better durability and dependable chain control for riders who push their bikes hard on trail, enduro, and technical terrain.

Compatibility Notes

• Not compatible with SRAM AXS and Transmission drivetrain systems
• Not compatible with Shimano 11-speed and higher drivetrain systems

Specifications

• Product Name: Lewis ALU MTB Chainring
• Material: 7075 Aluminum
• Finish: Hard-Anodized
• Mount Options: SRAM 3-bolt, 8-bolt
• Available Tooth Counts: 30T, 34T
• Available Offsets: 3 mm, 6 mm
• Application: Mountain bike drivetrain setups

Ideal For

The Lewis ALU MTB Chainring is ideal for riders looking for a lightweight direct-mount MTB chainring with strong wear resistance, reliable chain retention, and compatibility with select SRAM-style crank interfaces. It is well suited for trail, all-mountain, and aggressive MTB riding where drivetrain durability and performance matter.

Lewis ALU Crankset

Gravity-ready stiffness, lightweight 7075-T6 construction, and precise power transfer for aggressive trail, enduro, and downhill riding.

The Lewis ALU Crankset is designed for riders who want the strength and confidence needed for modern gravity riding without unnecessary weight. Machined from premium 7075-T6 forged aluminum, this crankset weighs just 642 g while delivering the stiffness, durability, and precise pedal response demanded by hard enduro and downhill use. From rough bike park laps to technical trail riding, the Lewis ALU is built to handle heavy loads and repeated impacts while maintaining a direct, controlled ride feel.

At the center of the system is a 29 mm DUB-compatible spindle paired with an 8-bolt SRAM chainring interface, giving riders broad compatibility with modern drivetrain setups and fast, secure chainring changes. The crank arms feature a hollowed 3D lattice structure with reinforcement in key stress zones to improve torsional stiffness and strength while keeping overall weight low. The result is a crankset that feels solid under power and stable in demanding terrain.

Key Features & Benefits

• 7075-T6 Forged Aluminum Construction: High-strength forged aluminum delivers an excellent balance of low weight, stiffness, and long-term durability for aggressive riding.
• 29 mm DUB-Compatible Spindle: Designed around the SRAM DUB spindle standard for compatibility with a wide range of modern bottom bracket setups.
• 8-Bolt SRAM Chainring Interface: Allows secure direct-mount chainring installation and easy chainring changes.
• Hollow 3D Lattice Arm Design: Removes unnecessary mass while reinforcing high-stress areas for improved stiffness and strength.
• Gravity-Focused Performance: Built for riders who need confident power transfer and durability for downhill, enduro, and hard trail use.
• Lightweight for the Category: At 642 g, the crankset offers serious strength without the weight penalty of many heavier gravity-oriented options.

Important Fitment Note

These are SRAM DUB MTB cranks, not MTB Wide cranks. Always follow your bottom bracket manufacturer’s installation instructions and use the correct spacer configuration to achieve the proper chainline for your frame.

Bike Setup Examples

Trek Top Fuel Gen 4 — 55 mm chainline

• Bottom Bracket: SRAM BSA DUB bottom bracket
• Crankset: Lewis ALU 100 mm SRAM MTB
• Drive-Side Spacer: 4.5 mm
• Non-Drive-Side Spacer: 0 mm
• Crank Preload Adjuster: Tighten a few turns until just snug with no side-to-side play
• Chainring: 0 mm offset

Transition Patrol — 52 mm chainline

• Bottom Bracket: SRAM BSA DUB bottom bracket
• Crankset: Lewis ALU 100 mm SRAM MTB
• Drive-Side Spacer: 4.5 mm
• Non-Drive-Side Spacer: 0 mm
• Crank Preload Adjuster: Tighten a few turns until just snug with no side-to-side play
• Chainring: 3 mm offset

You can view the SRAM DUB bottom bracket guide here. If your bottom bracket manufacturer provides more specific spacer instructions, follow those instead.

Why This Crankset Stands Out

A high-quality MTB crankset needs to do more than survive impacts. It also needs to transfer power efficiently, stay tight under load, and work properly with modern bottom bracket and chainline standards. The Lewis ALU Crankset is built for exactly that, combining a lightweight forged alloy construction, DUB-compatible spindle, and modern direct-mount chainring interface in a package intended for aggressive riders who want dependable performance and cleaner drivetrain integration.

Specifications

• Product Name: Lewis ALU Crankset
• Material: 7075-T6 Forged Aluminum
• Weight: 642 g
• Spindle Diameter: 29 mm
• Spindle Standard: SRAM DUB MTB
• Chainring Interface: 8-bolt SRAM
• Crank Arm Length: 162.5 mm
• Frame Support: 29 x 100 mm Boost
• Bottom Bracket Compatibility: BSA 68/73 mm threaded and compatible pressfit bottom brackets
• Color Options: Black, Gunsmoke, Nebula

Ideal For

The Lewis ALU Crankset is ideal for riders looking for a lightweight gravity crankset with SRAM DUB MTB compatibility, strong power transfer, and modern direct-mount chainring fitment. It is especially well suited for enduro, downhill, bike park, and aggressive trail builds where stiffness, durability, and correct chainline setup all matter.

Lewis X-Power Floating Rotor

High-heat braking performance for aggressive MTB, e-MTB, Sur-Ron, and select Talaria front brake applications.

The Lewis X-Power Floating Rotor is built for riders who need stronger, more consistent braking on long descents, heavier bikes, and high-load riding conditions. Designed with a CNC-machined 420 stainless steel braking track and a CNC-machined aluminum carrier, this rotor is engineered to deliver excellent stopping power while helping reduce weight compared with a fully steel design. Its floating rotor construction allows the braking ring to expand more freely under heat, helping reduce distortion, maintain flatter rotor performance, and preserve braking consistency when the system is pushed hard.

With a 2.3 mm thickness and large-diameter options, the X-Power rotor is especially well suited for riders looking for more heat capacity, stronger brake torque, and better durability under repeated heavy braking. Whether you are riding aggressive trail, enduro, bike park, downhill, or e-bike terrain, this rotor is designed to provide more confidence when speed, heat, and bike weight increase.

Important Fitment Information

These rotors use specific bolt circle diameters (BCD). That means only certain versions will fit specific bikes. Check your hub and rotor mounting pattern carefully before ordering.

Warning: These rotors are not compatible with Talaria rear rotor applications. For Talaria, this listing is front rotor only. For Sur-Ron, you must choose the correct BCD-specific rotor version for your bike.

What Is a Floating Rotor?

A floating brake rotor uses a two-piece design where the outer braking ring is attached to the inner carrier with rivets or floating hardware instead of being rigidly fixed in one piece. This allows the braking surface to move slightly as it heats and cools.

Under braking, the outer steel ring expands as temperatures rise. On a one-piece rotor, that heat expansion can contribute to warping or distortion. On a floating rotor, the braking ring can expand more independently from the carrier, helping the rotor stay flatter and more consistent under heat. The result is improved braking stability, better pad contact, and reduced likelihood of heat-related rotor deformation.

Why Choose a Floating Rotor?

• Better Heat Management: Helps the braking surface expand under heat with less distortion.
• Reduced Warping Risk: Floating construction helps reduce the chance of rotor deformation during heavy braking.
• More Consistent Pad Contact: A flatter rotor under heat helps maintain more even braking feel.
• Improved Fade Resistance: Better heat handling can support more stable braking on long descents.
• Lighter Two-Piece Design: Aluminum carrier reduces weight while the steel braking ring maintains durability.

Key Features & Benefits

• CNC-Machined 420 Stainless Steel Braking Track: Built for wear resistance, braking consistency, and dependable stopping power.
• CNC-Machined Aluminum Carrier: Reduces overall rotor weight while maintaining structural support.
• Floating Rivet Construction: Helps the braking ring move more freely under heat for improved thermal stability.
• 2.3 mm Rotor Thickness: Increased thickness supports higher heat capacity and stronger braking confidence in demanding conditions.
• Large Rotor Diameter Options: Available in larger sizes for improved leverage and braking torque.
• Built for Heavy-Load Riding: Ideal for aggressive MTB, e-MTB, bike park, and e-moto use where braking demands are higher.

Specifications

• Product Name: Lewis X-Power Floating Rotor
• Rotor Type: Floating disc brake rotor
• Braking Track Material: CNC-Machined 420 Stainless Steel
• Carrier Material: CNC-Machined Aluminum
• Thickness: 2.3 mm
• Diameter Options: 200 mm, 220 mm
• Mount Type: 6-bolt
• MTB Standard BCD: 44 mm

Ideal For

The Lewis X-Power Floating Rotor is ideal for riders looking for a high-performance floating brake rotor for aggressive trail, enduro, downhill, e-MTB, and select e-moto applications. It is especially useful for riders who want better heat control, stronger braking stability, and improved confidence on steep or sustained descents.

If you are looking for a rotor that combines premium materials, floating construction, and high-load braking performance, the Lewis X-Power Floating Rotor is built to deliver more consistent braking when conditions are at their toughest.

Lewis AE Axial Cylinder Brake Set

Firm lever feel, powerful monoblock braking, and premium CNC construction at a more accessible price point.

The Lewis AE is designed for riders who want a strong, immediate brake feel with premium materials and serious stopping power. Built around a one-piece monoblock CNC caliper and an axial master cylinder, the AE delivers a direct, solid lever feel with the kind of control and consistency aggressive riders look for in trail, enduro, and downhill braking.

Lewis developed the AE for riders who prefer a firmer, more substantial lever character. Compared with a lighter, more progressive brake feel, the AE gives stronger feedback at the lever and a more immediate bite point. For riders who like a more decisive braking response, the AE is built to feel powerful, planted, and confidence-inspiring on steep terrain.

Why the Lewis AE Stands Out

• Monoblock CNC Caliper: The AE uses a one-piece monoblock 7075-T6 aluminum caliper instead of a more common two-piece design. This helps reduce caliper flex and supports more direct, consistent braking power.
• Axial Master Cylinder: The axial cylinder layout creates a crisp, responsive engagement point with a firm lever feel that many aggressive riders prefer.
• 4-Bearing Lever Pivot: The lever rides on 4 sealed cartridge bearings rather than basic bushings, helping improve smoothness, reduce lever play, and support long-term durability.
• Asymmetric 4-Piston Layout: The caliper uses 2 x 14 mm and 2 x 17 mm stainless steel pistons to balance initial control with strong overall stopping power.
• Premium CNC Finish: Precision-machined construction gives the AE a higher-end look and feel than many brakes in the same category.
• Mineral Oil System: Designed around mineral oil operation for riders and mechanics who prefer that brake fluid platform.

Ride Feel & Performance

• Firm, substantial lever feel
• Strong initial bite with solid feedback
• Consistent braking under heavy use
• Well suited for trail, enduro, and downhill riding

The Lewis AE is a strong choice for riders who want a brake that feels direct and decisive at the lever while still offering the refinement of CNC construction, sealed lever bearings, and a rigid monoblock caliper.

Mechanic's Note: Pad Compatibility

The Lewis AE uses the Hope Tech 3 E4 pad shape, also referenced in the Lewis lineup as TP-37 / LP-37. This makes replacement pad sourcing easier and provides access to a broad range of pad compounds.

Configuration

These brakes are sold in the following standard configuration:

• Left Lever: Front Brake (90 cm hose)
• Right Lever: Rear Brake (165 cm hose)

Note: The levers use a flip-flop design. Riders running moto-style brake setup can swap hose positions to reverse the configuration.

What’s in the Box?

• Front and rear AE caliper + lever assemblies (pre-bled)
• Mounting hardware (stainless bolts and washers)
• 2 hose fittings / olives for shortening hoses
• Bleed blocks
• Lewis brake pads (pre-installed)

Specifications

• Product Name: Lewis AE Axial Cylinder Brake Set
• Intended Use: Enduro / Trail / Downhill
• Master Cylinder: Axial
• Lever Feel: Firm
• Pistons: 4 x Stainless Steel (14 mm + 17 mm)
• Caliper Material: Monoblock CNC 7075-T6 Aluminum
• Fluid: Mineral Oil
• Adjustment: Tool-Free Reach Adjust
• Pad Compatibility: Hope Tech 3 E4 / Lewis VP-37 / Lewis TP-37 / Lewis LP-37
• Hoses: Braided (T150 Front / T200 Rear)
• Weight: Approx. 220 g per side (lever + caliper)

Ideal For

The Lewis AE is ideal for riders who want a firm-feeling 4-piston mountain bike brake with strong power, premium CNC construction, and easier replacement pad sourcing. It is especially well suited for aggressive trail riders, enduro racers, downhill riders, and anyone looking for a brake with a more direct, Shimano-like bite character in a premium package.

Lewis TP-30 Sintered Metallic Brake Pads

High-heat braking power, strong durability, and dependable performance for aggressive riding.

The Lewis TP-30 Sintered Metallic Brake Pads are built for riders who need consistent braking performance under high heat and heavy load. Designed for Lewis LV2, BB2, SL, and SLR calipers, the TP-30 uses a sintered metallic compound that delivers strong bite, excellent fade resistance, and dependable braking in demanding conditions. These pads are especially well suited for riders pushing hard on long descents, steep terrain, and heavier bikes.

Sintered metallic pads are a strong choice for riders who prioritize braking power, durability, and consistent performance over absolute quietness. Compared with softer compounds, they typically handle sustained braking heat better and tend to last longer in wet, muddy, and abrasive riding conditions. For aggressive trail, enduro, downhill, and e-bike use, the TP-30 is designed to maintain confidence when braking loads increase.

Compatibility

• Lewis LV2
• Lewis BB2
• Lewis SL
• Lewis SLR

Key Features & Benefits

• Sintered Metallic Compound: Designed for high heat resistance and strong braking power during repeated heavy braking.
• Fade-Resistant Performance: Handles long descents and sustained braking better than many softer pad compounds.
• Excellent Durability: Built for long service life in dry, wet, and muddy conditions.
• Consistent Braking Feel: Delivers stable, predictable braking performance on demanding terrain.
• Caliper-Specific Fitment: Built specifically for compatible Lewis 2-piston calipers using the TP-30 pad shape.
• Strong Choice for Aggressive Riding: Ideal for riders who value braking power and heat control over lower noise and reduced rotor wear.

What to Expect from Sintered Metallic Pads

• Pros: Better heat resistance, strong braking consistency, long pad life, and improved durability in harsh conditions.
• Trade-Offs: Metallic pads can run louder than organic or semi-metallic options and may increase rotor wear over time.

Specifications

• Product Name: Lewis TP-30 Brake Pads
• Compound: Sintered Metallic
• Pad Width: 30 mm
• Weight: 25 g per pair
• Compatibility: Lewis LV2, BB2, SL, SLR

Ideal For

The Lewis TP-30 Sintered Metallic Brake Pads are ideal for riders looking for a durable, high-power brake pad for trail, enduro, downhill, and e-bike riding. They are best suited for riders who want strong, fade-resistant braking and are willing to accept a bit more noise and rotor wear in exchange for higher performance under load.

If you want a brake pad that prioritizes power, heat control, and durability in demanding conditions, the Lewis TP-30 is a strong option for compatible Lewis 2-piston brake systems.

Lewis LP-30 Semi-Metallic Brake Pads

Quiet braking, smooth control, and dependable durability for compatible Lewis 2-piston brake systems.

The Lewis LP-30 Semi-Metallic Brake Pads are designed for riders who want a balanced blend of braking power, low noise, and reduced rotor wear. Built for Lewis LV2, BB2, SL, and SLR calipers, the LP-30 uses a semi-metallic brake pad compound that delivers consistent stopping power with a smoother, quieter feel than full sintered metallic pads. For riders who want reliable braking without the harsher feel and noise of more aggressive compounds, the LP-30 is a strong all-around option.

Semi-metallic pads are especially well suited for riders who want predictable braking in mixed conditions while helping preserve rotor life. Compared with sintered metallic compounds, they typically offer quieter operation, smoother initial bite, and less abrasive rotor contact, while still providing stronger durability and heat resistance than many organic-style pads. That makes the LP-30 a practical choice for trail, XC, all-around mountain bike, and everyday riding.

Compatibility

• Lewis LV2
• Lewis BB2
• Lewis SL
• Lewis SLR

Key Features & Benefits

• Semi-Metallic Compound: Balances braking power, durability, and lower noise for smooth, controlled performance.
• Quieter Than Sintered Pads: Designed to reduce braking noise compared with more aggressive metallic compounds.
• Reduced Rotor Wear: Less abrasive than full sintered metallic pads, helping support longer rotor life.
• Smooth Braking Feel: Offers a gentler initial bite and more progressive control in mixed riding conditions.
• Reliable All-Around Performance: Well suited for everyday trail, XC, and general riding where balanced performance matters.
• Caliper-Specific Fitment: Built specifically for compatible Lewis 2-piston calipers using the LP-30 pad shape.

How LP-30 Compares to Sintered Metallic Pads

• Advantages: Lower noise, smoother engagement, and reduced rotor wear.
• Trade-Offs: Lower ultimate heat resistance and slightly less durability in the most extreme long-descent or high-load braking conditions.

Specifications

• Product Name: Lewis LP-30 Brake Pads
• Compound: Semi-Metallic
• Pad Width: 30 mm
• Weight: 21.7 g per pair
• Compatibility: Lewis LV2, BB2, SL, SLR

Ideal For

The Lewis LP-30 Semi-Metallic Brake Pads are ideal for riders looking for a quiet, reliable brake pad for XC, trail, and all-around mountain bike use. They are especially well suited for riders who want balanced braking performance with smoother feel and less rotor wear than a full sintered metallic pad.

If you want a brake pad that prioritizes consistency, lower noise, and everyday ride quality, the Lewis LP-30 is a strong choice for compatible Lewis 2-piston brake systems.

Lewis LV4 4-Piston Hydraulic Disc Brake Kit

Radial-cylinder precision, 4-piston power, and premium CNC construction for trail, enduro, and gravity riding.

The Lewis LV4 is designed for riders who want a firmer, more direct brake feel paired with the power of a modern 4-piston caliper. Built around Lewis’s radial master cylinder design and a lightweight CNC-machined lever body, the LV4 delivers fast engagement, strong feedback at the lever, and powerful stopping performance for demanding trail, enduro, and e-MTB riding.

Paired with a 4-piston caliper, the LV4 is built to deliver serious braking control without the excessive bulk of many gravity-oriented brake systems. The combination of a stiff lever architecture, large piston layout, and precision-machined aluminum construction gives riders a brake that feels responsive, planted, and powerful on steep terrain and sustained descents.

Key Features & Benefits

• Radial Master Cylinder Design: The Lewis Vertical design places the master cylinder in a radial orientation to create a more direct, responsive lever feel.
• 4-Piston Caliper Power: Built for stronger braking force and improved heat management compared with lighter-duty trail brake systems.
• Asymmetric Piston Layout: Uses 2 x 14 mm and 2 x 17 mm stainless steel pistons to balance smooth engagement with strong overall clamping force.
• Dual Adjustment: Features tool-free reach adjustment and bite point adjustment so riders can fine-tune lever position and brake feel.
• 4 Sealed Cartridge Bearings: Lever pivots on sealed bearings for smoother action, reduced play, and a more refined lever feel.
• CNC 7075-T6 Aluminum Construction: Precision-machined aluminum body and caliper provide stiffness, strength, and premium finish quality.
• Mineral Oil System: Designed around a mineral oil braking platform with Kevlar braided hoses.

Ride Feel & Performance

• Firm, direct lever response
• Strong braking power for aggressive riding
• Excellent control on steep descents
• Low-weight feel for a 4-piston brake system
• Well suited for trail, enduro, DH, and e-MTB use

The Lewis LV4 is a strong choice for riders who want a more immediate brake feel than a softer, more progressive system while still retaining the control and adjustability needed for technical terrain.

Mechanic’s Note: Pad Compatibility

The Lewis LV4 uses the Hope Tech 3 E4 pad shape, making replacement pad sourcing easier and giving riders access to multiple pad compound options.

Configuration

These brakes are sold in the following standard configuration:

• Left Lever: Front Brake (90 cm hose)
• Right Lever: Rear Brake (160 cm hose)

Note: For riders who want to use a moto-style brake setup (Left/Rear & Right/Front), you can swap the brake hose positions at the levers to reverse the configuration.

What’s in the Box?

• Front and rear LV4 caliper + lever assemblies (pre-assembled with brake line)
• Mounting hardware (stainless bolts and washers)
• Lewis brake pads

Specifications

• Product Name: Lewis LV4 4-Piston Hydraulic Disc Brake Kit
• Intended Use: Trail / DH / Trials / All-Mountain
• Master Cylinder: Radial (Lewis Vertical)
• Pistons: 4 x Stainless Steel (14 mm + 17 mm)
• Material: CNC 7075-T6 Aluminum
• Fluid: Mineral Oil
• Adjustments: Tool-free reach adjust and bite point adjust (Not tool free)
• Pad Compatibility: Hope Tech 3 E4 / Lewis VP-37 / Lewis TP-37 / Lewis LP-37
• Hoses: Kevlar Braided
• Weight: Approx. 597 g per pair with hoses

Ideal For

The Lewis LV4 is ideal for riders looking for a powerful 4-piston mountain bike brake with a firm lever feel, radial-cylinder response, and premium CNC construction. It is especially well suited for aggressive trail riders, enduro racers, DH riders, and e-MTB riders who want strong braking with a more direct character.

Sumart UBB-40 Universal Bleed Block & Piston Spreader

Protect pistons, set the correct pad gap, and make 4-piston brake bleeding cleaner and more consistent.

The Sumart UBB-40 Universal Bleed Block is designed to simplify hydraulic brake maintenance on 4-piston calipers. Built to help hold pistons in the correct position during bleeding and service, the UBB-40 protects delicate pistons, supports proper pad spacing, and helps mechanics achieve a more consistent brake setup with less guesswork.

Whether you are servicing brakes in a professional workshop or maintaining your own bike at home, the UBB-40 is a practical tool for safer, cleaner, and more repeatable brake bleeds. Its adjustable design lets you fine-tune the fit by hand or with a 3 mm hex key, making it easier to work across a wide range of compatible 4-piston brake systems.

Key Features & Benefits

• Universal 4-Piston Compatibility: Designed to work with most major 4-piston hydraulic disc brake systems.
• Dual Adjustment Options: Can be adjusted by hand or with a 3 mm hex key for more precise positioning.
• Piston Protection: Helps prevent damage to delicate brake pistons during bleeding and maintenance.
• Correct Pad Gap Setup: Supports proper spacing for smoother brake operation and more consistent lever feel after service.
• Workshop-Ready Construction: Built for repeated brake maintenance and regular workshop use.
• Multiple Color Options: Available in a wide range of finishes to match your tools or bike build.

Why Use a Bleed Block?

A proper bleed block helps keep brake pistons correctly positioned during maintenance, which can improve bleed consistency and reduce the risk of accidental piston damage. For 4-piston brakes especially, using the correct block can make brake bleeding faster, more repeatable, and less frustrating.

Specifications

• Model: UBB-40
• Product Type: Universal bleed block / piston spreader
• Compatibility: Most 4-piston hydraulic disc brake calipers
• Adjustment: Hand-adjustable or 3 mm hex key
• Weight: 55 g
• Country of Origin: Made in Taiwan
• Color Options: Black, Red, Blue, Gold, Purple, Orange, Pink, Green

Ideal For

The Sumart UBB-40 is ideal for bike shops, home mechanics, and riders servicing 4-piston hydraulic disc brakes. It is especially useful for brake bleeding, piston resetting, and routine hydraulic brake maintenance where piston protection and consistent pad spacing matter.

If you want a cleaner, more controlled way to service 4-piston brakes, the Sumart UBB-40 Universal Bleed Block is a smart addition to your brake maintenance toolkit.

Sumart UBB-20 Universal Bleed Block & Piston Spreader

Protect pistons, set the correct pad gap, and make 2-piston brake bleeding cleaner and more consistent.

The Sumart UBB-20 Universal Bleed Block is designed to simplify hydraulic brake maintenance on 2-piston calipers. Built to help hold pistons in the correct position during bleeding and service, the UBB-20 protects delicate ceramic pistons, supports proper pad spacing, and helps mechanics achieve a more consistent brake setup with less guesswork.

This tool can also be used on 4-piston calipers as a piston spreader, though it is primarily intended as a bleed block for 2-piston systems. Whether you are servicing brakes in a professional workshop or maintaining your own bike at home, the UBB-20 is a practical tool for safer, cleaner, and more repeatable brake bleeds.

Key Features & Benefits

• Ceramic Piston Protection: Helps protect delicate brake pistons during bleeding and maintenance.
• Designed for 2-Piston Calipers: Built specifically for 2-piston hydraulic brake systems found on many bicycles.
• Also Useful as a Piston Spreader: Can be used on 4-piston calipers for piston spreading, even though it is not intended as a 4-piston bleed block.
• Adjustable by Hand or 3 mm Hex Key: Easy to fine-tune for a more precise fit during service.
• Broad Hydraulic Brake Use: A practical tool for brake bleeding, piston resetting, and general brake maintenance.
• Multiple Color Options: Available in several finishes to match your tools or bike build.

Why Use a Bleed Block?

A proper bleed block helps keep brake pistons correctly positioned during maintenance, which can improve bleed consistency and reduce the risk of accidental piston damage. On 2-piston brake systems especially, using the correct block can make brake bleeding faster, more repeatable, and less frustrating.

Specifications

• Model Number: UBB-20
• Product Type: Universal bleed block / piston spreader
• Primary Use: 2-piston hydraulic brake calipers
• Secondary Use: 4-piston calipers for piston spreading only
• Adjustment: Hand-adjustable or 3 mm Allen key
• Available Colors: Black, Red, Blue, Gold, Purple, Orange, Pink

Ideal For

The Sumart UBB-20 is ideal for bike shops, home mechanics, and riders servicing 2-piston hydraulic disc brakes. It is especially useful for brake bleeding, piston resetting, and routine hydraulic brake maintenance where piston protection and consistent pad spacing matter.

If you want a cleaner, more controlled way to service 2-piston brakes, the Sumart UBB-20 Universal Bleed Block is a smart addition to your maintenance toolkit.

The Lewis Bike Shimano I-Spec II Adapter offers a streamlined solution for mounting your Lewis brake lever and Shimano I-Spec II shifter on a single clamp (Specificallty the right handlebar). This adapter helps reduce clutter on the handlebars by consolidating two components into one secure attachment point, improving ergonomics and simplifying setup. Designed for compatibility with all Lewis braking systems, it ensures precise alignment and reliability, making it an ideal choice for riders seeking a clean, efficient, and easy-to-install solution for their bike's cockpit.

These are not compatible with the Lewis AE brakes!

The PM-PM+20-A was specifically used with the Lewis LHP calipers, if you have issues with other 20mm adpaters please try this one. This is designed to work with the Lewis Bike LHP-U4 and LHP-S4 brake systems. It can still be used with the other LHT and LH4 brakes.

The Lewis Bike PM-20-A Adapter is an essential component for riders seeking a versatile and reliable way to mount their disc brake calipers to a wide range of frame and fork configurations. This adapter allows seamless compatibility between 20mm and 40mm Post Mount standards, ensuring a secure and stable fit.

Made from durable materials, it guarantees consistent performance under various riding conditions. Its precise design maintains brake alignment, contributing to improved braking efficiency and performance. The adapter is easy to install, making it a practical solution for upgrading or fine-tuning your bike's braking system.