Recommended Additional Upgrades
RCB RS1 Series Forged Racing Spec Master Brake Pump (17mm) – HD Titanium with Forged Carbon Blade is a top-tier, race-grade hydraulic control unit. Engineered explicitly for track and heavy street applications, the RS1 matches an ultra-rigid forged housing finished in standard HD Titanium with a featherweight, structural carbon fiber lever blade to deliver unyielding pressure, immediate initial bite, and deep trailing-brake feedback.
The oversized 14mm or 17mm internal bore diameter provides the large-volume fluid displacement required to seamlessly drive high-performance 4-piston, dual 2-piston, or aggressive axial caliper setups.
Key Features
Forged Hard-Alloy HD Titanium Housing: Machined via high-pressure forging from structural alloy blocks. This process delivers an incredibly dense grain profile that completely halts housing expansion or internal flexing under fierce stopping pressures.
Genuine Carbon Fiber Lever Blade: Swaps out standard aluminum handles for a 100% genuine carbon fiber composite blade. This minimizes rotating handlebar mass, completely eliminates handle flex, and provides exceptional tensile strength.
Oversized 17mm Piston with Gold Plating: Outfitted with an enlarged 17mm internal piston block treated with a specialty micro-thin gold plating. This plating drastically minimizes internal friction, shields the primary cylinder walls from abrasion, and wards off corrosion caused by weathered racing fluids.
High-Volume 40ml Smoke Reservoir: Includes an independent, smoke-tinted 40ml fluid reservoir tank capable of managing modern high-performance brake fluids up to extreme $DOT\ 5$ glycol/silicone specifications.
True Radial Layout Mechanical Advantage: Aligns the master piston inline with your finger’s pulling stroke, removing the indirect energy loss common with stock axial pumps.
Technical Specifications
| Feature | RCB RS1 17mm Carbon Edition Details |
| Series Classification | RS-1 Performance Racing Spec Series |
| Piston Bore Size | 17.0 mm (High Fluid Volume Displacement) |
| Piston Coating | Ultra-Low Friction Gold Plating Treatment |
| Lever Handle Material | Ultra-Lightweight Rigid Carbon Fiber Composite |
| Cylinder Housing Finish | Hard-Anodized HD Titanium |
| Fluid Feed Inlet Thread | Standard M10 x 1.25mm Thread Pitch |
| Reservoir Volume Capacity | 40 ml (Compatible up to $DOT\ 5$) |
| Handlebar Installation | Standard 22.2mm (7/8″) Handlebar Clamp |
FAQs
Is this better than S1-FL?
Yes, RS1 Carbon is more premium with carbon fiber construction and higher performance focus.
Is 17mm suitable for my bike?
Only if you are using upgraded calipers or dual-disc setup.
Is this for daily use?
It can be used daily, but it is designed for performance and aggressive riding.












RCB E2 SERIES BRAKING SYSTEM
RCB S1 SERIES BRAKING SYSTEM

