Lewis SLR Lightweight Road Bike Caliper

Lewis SLR Ultimate Lightweight Flat Mount Road Bike Caliper

The Lewis SLR is the lightest flat mount road caliper we’ve ever produced—built for riders chasing every performance advantage. Precision CNC-machined from 7075-T6 aluminum and equipped with titanium pistons and hardware, the SLR delivers uncompromising braking power at an astonishingly low weight of just 68.5g (without pads or fittings). The caliper comes with a standard 2.6g stainless alloy line fitting and also an ultra-lightweight 1.5g alloy brake line fitting. Each version of said fitting has a specific torque required.

Designed with racers in mind, the SLR features dual 21mm pistons for strong, consistent braking, while the wide pad clearance (0.3mm per side) reduces rotor rub and makes setup simple. Two versions are available for Mineral Oil and DOT 4 / 5.1, there's an option to work with almost any braking system.

Key Features:

• Material: CNC-machined 7075-T6 aluminum

• Pistons & Hardware: Titanium

• Piston Size: 2 × 21mm

• Mount: Flat mount, 34mm hole distance

• Fluid Options: Mineral Oil or DOT 5.1

• Weight: 68.5g (without pads/fittings)

• Colors: Black, Silver, Pink, Gold, Orange, Purple

• Pad Clearance: 0.3mm per side for rub-free performance

• Strength & Stability: No deformation under extreme hydraulic pressure

Torque Specs:

• Aluminum Lightweight Fitting: Fitting to hose 4.5N·m | fitting to caliper 2N·m

• Aluminum Fitting: Fitting to hose 5-6N·m | fitting to caliper 2.3N·m

The SLR redefines what’s possible in lightweight braking—offering pro-level power, precision, and stability in a race-ready package.