At DMG Motorsports, we present the Brembo 19RCS Upgrade Brake Master Cylinder — a 19mm radial master cylinder engineered to transform the feel and power of your motorcycle's braking system. Built for riders who demand race-proven performance, this master cylinder is optimized for dual-caliper, four-piston braking systems and utilizes a massive 19mm piston to deliver the maximum stopping power possible. Brembo's patented RCS (Ratio Click System) lets you tune the lever ratio between an 18mm setting for enhanced modulation and control, or a 20mm setting for a more reactive, aggressive engagement — all with a simple turn of a screw. Whether you're carving up the track or commuting on the street, this master cylinder gives you the flexibility to dial in the exact braking feel you want, backed by the same high-grade materials Brembo uses in MotoGP and WSBK competition.

Features:

• 19mm piston optimized for dual-caliper, four-piston braking systems for maximum stopping power
• Patented RCS (Ratio Click System) allows lever ratio adjustment between 18mm (better modulation) and 20mm (quicker, more reactive engagement) settings
• Forged aluminum body, CNC machined to remove excess weight for a lightweight yet strong component
• Piston, seals, and pushrod use the same high-grade materials found in Brembo's MotoGP and WSBK racing components
• Adjustable thumb screw on the lever to accommodate various hand sizes for improved ergonomics
• Foldable outer lever section designed to minimize damage in the event of a crash or tip-over
• Includes a universal brake light switch harness for street-legal use (requires cutting/splicing of stock harness)
• May require a Brembo Brake Reservoir Kit and aftermarket brake line(s), as compatibility with OEM reservoirs is not guaranteed