Drivetrain Components | Chains, Derailleurs & Cassettes

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Three black bicycle chain stays with 'LEWIS ALU' branding on a white background

From $189.00

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.

Out of stock

Lewis ALU MTB Aluminum Chainring

$59.00

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.

Low in stock

Lewis Ridge Aluminum Bike Pedals

$109.00

Lewis ALU Series Pedals — 7075 CNC Aluminum DH/Enduro Pedals

Built for riders who punish gear. The Lewis ALU Series Pedals are engineered from 7075 forged aluminum alloy and finished with full CNC machining, giving you downhill-ready strength without unnecessary weight. The ultra-thin platform, optimized support zones, and strategic pin layout deliver the confidence and grip you want on aggressive terrain.

Ultra-Thin Platform for Better Power Transfer

The ALU Series uses a low-profile, ultra-thin body that brings your foot closer to the axle.
This minimizes pedal roll, improves stability at high speeds, and delivers a more connected ride feel—especially on rough DH or Enduro trails.

Ergonomic Pedal Shape for Superior Foot Support

The platform is designed around the natural shape of your foot.
Support zones and relief areas are strategically placed to improve comfort on long, technical rides, while the raised forefoot area adds power support and reduces fatigue in the arch.

Optimized Pin Layout for Maximum Grip

Lewis places each stud exactly where pressure points occur during aggressive riding.
Pins in the low-support areas are length-tuned and positioned for a consistent, locked-in grip without creating pressure hotspots.

7075 CNC Aluminum — Strength Without the Weight

Made from aerospace-grade 7075 forged aluminum, then CNC machined for precision, the ALU Series achieves an exceptional balance of durability, stiffness, and weight.
Perfect for DH, Enduro, and riders who want a tougher pedal that doesn’t feel sluggish.

Weight: 207g per pedal (single side)

Why Riders Choose Lewis ALU Pedals

Ultra-thin platform for enhanced stability
Ergonomic shaping for long-ride comfort
Oversized main ball bearing for ultra-smooth movement
Raised forefoot ramp improves power efficiency
Strategic pin layout for unmatched grip
7075 CNC aluminum for maximum strength
Ideal for DH, Enduro & aggressive trail riding

In stock

Sumart Freewheel Turner / Cassette Pliers

$59.99

Sumart FWT-30 Freewheel Turner / Cassette Pliers

Strong grip, high leverage, and dependable performance for cassette and freewheel service.

The Sumart FWT-30 Freewheel Turner / Cassette Pliers is a heavy-duty drivetrain service tool designed to help mechanics hold cassettes and freewheels securely during removal and installation. Built from durable 45# carbon steel with a chrome-plated finish, the FWT-30 is made for repeated workshop use while resisting corrosion and wear. Its long 300 mm handle length provides the leverage needed to tackle stubborn drivetrains with more control and less effort.

Whether you are replacing a worn cassette, servicing a freewheel, or performing general bike drivetrain maintenance, the FWT-30 gives you a more stable grip on sprockets so you can work more efficiently and with less frustration. Designed for compatibility with a broad range of modern drivetrains, it is a practical addition to both home workshops and professional service benches.

Key Features & Benefits

Wide Drivetrain Compatibility: Works with 7, 8, 9, 10, 11, and 12-speed cassettes as well as threaded freewheels, making it a versatile tool for many repair jobs.
Secure Sprocket Grip: Designed to hold cogs firmly during cassette or freewheel service, helping prevent slipping while improving working control.
Fits Up to 28T Sprockets: Supports sprockets up to 28 teeth or approximately 11.4 cm in diameter.
300 mm Length for Better Leverage: Long handles help increase torque and reduce hand fatigue when loosening tight or seized components.
45# Carbon Steel Construction: Provides the strength needed for repeated drivetrain service and demanding workshop use.
Chrome-Plated Finish: Helps resist corrosion and wear for longer-lasting durability in shop environments.
Useful for Home and Pro Mechanics: A practical tool for bike shops, home repair stands, and riders who perform their own drivetrain maintenance.

Why Use Cassette Pliers?

When removing a cassette or servicing a freewheel, holding the sprockets securely is essential for safe and efficient work. A dedicated cassette pliers tool gives you much more control than improvised methods, helping reduce slippage, protect components, and make drivetrain service easier. The Sumart FWT-30 is designed to improve grip and leverage so you can complete cassette and freewheel jobs more quickly and with greater confidence.

Specifications

Model: FWT-30
Product Type: Freewheel turner / cassette pliers
Material: 45# Carbon Steel
Surface Finish: Chrome Plated
Maximum Sprocket Size: 28T (11.4 cm)
Length: 300 mm
Compatibility: 7 / 8 / 9 / 10 / 11 / 12-speed cassettes and threaded freewheels

Ideal For

The Sumart FWT-30 Freewheel Turner / Cassette Pliers is ideal for home mechanics, bike shops, and service technicians who need a reliable cassette removal tool for routine drivetrain maintenance. It is well suited for servicing road bikes, mountain bikes, gravel bikes, commuter bikes, and other bicycles using multi-speed cassette or freewheel systems.

Tackle stubborn cassettes and freewheels with more confidence using the Sumart FWT-30, a durable bike tool built for grip, leverage, and dependable workshop performance.

In stock

Sumart UDH Universal Derailleur Hanger

$25.00

Sumart UDH-12 Universal Derailleur Hanger

Precise alignment, stronger impact resistance, and dependable drivetrain protection for modern MTB and e-MTB builds.

The Sumart UDH-12 Universal Derailleur Hanger is built for modern mountain bike and e-MTB drivetrains that require accurate derailleur alignment and dependable impact protection. Designed around the M12 x 1.0 derailleur hanger standard, the UDH-12 combines 7075-T6 aluminum with fiberglass-reinforced thermoplastic to create a hanger that balances stiffness, durability, and impact management. The result is a drivetrain component engineered to support smoother shifting while helping reduce the risk of damage during crashes, rock strikes, and other hard trail impacts.

Whether you are replacing a damaged hanger, carrying a spare for race day, or upgrading to a stronger derailleur hanger for aggressive riding, the UDH-12 is designed to keep your rear derailleur positioned correctly and your drivetrain running more consistently. Proper derailleur hanger alignment is critical for shift quality, drivetrain efficiency, and derailleur protection, especially on modern 12-speed mountain bike systems where small alignment issues can quickly affect performance.

Key Features & Benefits

Universal Fitment Standard: Designed for compatibility with modern MTB and e-MTB frames that use the M12 x 1.0 universal derailleur hanger interface.
7075-T6 Aluminum Construction: Aerospace-grade aluminum provides excellent strength, rigidity, and precision for consistent derailleur positioning.
Fiberglass-Reinforced Thermoplastic Protection: Reinforced polymer material helps absorb impacts and adds another layer of protection during crashes or drivetrain strikes.
Improved Derailleur Protection: Built to help reduce the chances of more expensive derailleur or frame damage when the bike takes a hit.
Precision Machining: Tight manufacturing tolerances support accurate derailleur alignment for cleaner, more reliable shifting.
Professional Finish: Features a clean black finish with a laser-etched SUMART logo for a refined, workshop-quality appearance.
Ideal Spare or Upgrade Part: A smart replacement to keep in your toolbox, race kit, or shop for quick derailleur hanger service.

Why a Quality Derailleur Hanger Matters

The derailleur hanger is one of the most important small parts in a drivetrain system. It helps position the rear derailleur correctly and is designed to take damage before more expensive components do. A properly made universal derailleur hanger can improve shifting accuracy, reduce drivetrain headaches, and provide valuable protection in a crash. For mountain bikes and e-bikes ridden in rough terrain, having a precise and durable hanger is essential for keeping the drivetrain working as intended.

Specifications

Model Number: UDH-12
Product Type: Universal derailleur hanger
Thread Size: M12 x 1.0
Material: 7075-T6 Aluminum and impact-resistant fiberglass-reinforced thermoplastic
Use Case: MTB and e-MTB
Color: Black

Ideal For

The Sumart UDH-12 is ideal for riders looking for a replacement derailleur hanger or a more durable hanger for mountain bike and e-bike use. It is especially well suited for trail riders, enduro riders, e-MTB owners, mechanics, and anyone who wants a universal derailleur hanger that supports accurate shifting and better impact protection.

Keep your drivetrain aligned, protected, and ready for hard use with the Sumart UDH-12 Universal Derailleur Hanger, a practical upgrade for riders who value shift quality, durability, and long-term drivetrain reliability.

In stock