RCB S1 LEVER ONLY (LH) for S1 Master Brake Pump

RCB S1 Replacement Lever (Left Hand Side) is a premium, high-strength control component engineered specifically as a direct-fit replacement for the left-hand configuration of the flagship RCB S1 Series Radial Master Brake Pump (used as a rear brake pump on premium automatic scooters or a hydraulic clutch master cylinder).

When a bike tips over, the handlebar levers are often the first components to suffer damage. This left-hand replacement blade restores the exact ergonomics, throw distance, and smooth hydraulic leverage of your original S1 radial setup, bringing your rear braking or clutch modulation back to peak tracking performance.

Key Features

• Precision CNC-Machined Billet Aluminum: Fully sculpted from a solid block of high-tensile billet aluminum alloy. This structural choice provides exceptional rigidity, completely eliminating lever flex under aggressive clutch pulling or heavy rear wheel braking.

• True Radial Pivot Ergonomics: Specifically contoured to match the perpendicular stroke alignment of the RCB S1 Left-Hand Radial master cylinder housing, ensuring an instantaneous mechanical feel and direct fluid feedback.

• Integrated Multi-Position Dial Adjuster: Features a premium click-adjust dial mechanism on the face of the lever body. This allows you to fine-tune the initial distance between the lever blade and your handlebar grip, catering perfectly to varying hand sizes and glove thicknesses.

• Aerodynamic Aerodynamic Vent Line: The outer third of the lever blade features a stylized cutout slot. This vent line prevents high-velocity aerodynamic wind pressure from accidentally acting against the lever and causing unexpected brake drag or clutch slippage at high speeds.

• Structural Fail-Safe Breakaway Groove: Engineered with a clean snap line near the outer tip. In the event of a crash, the tip is designed to break away under localized stress, preserving the main body of the lever so you can still operate your controls and finish your ride safely.

Technical Specifications

Fitment Warning: This replacement blade is explicitly engineered to fit the Left-Hand RCB S1 Radial Master Brake Pump housing. It will NOT align with or mount onto RCB E Series, E2 Axial, S1-FL, or standard factory motorcycle master cylinders. Always confirm your exact master cylinder series before purchase.