Brembo 19Rcs Brake Master Cylinder The Brembo 19Rcs Master Cylinder is engineered to excel with dual-caliper, four-piston braking systems. Boasting a substantial 19mm piston, it delivers unmatched stopping power. The Brembo 19Rc S provides 2 different performance settings, giving the rider the power to tailor the braking system to their riding style, road conditions, and other components. The RCS system's ingenious design allows for a quick adjustment of the brake lever ratio by turning a screw. The 20mm setting delivers a more immediate braking response, while the 18mm setting ensures superior feel and modulation. For added convenience, the Brembo lever includes an adjustable thumb screw, enabling a personalized fit for a variety of hand sizes. In the unfortunate event of a crash, the lever's outer portion folds away, minimizing damage. This patented master cylinder is crafted from forged aluminum and meticulously CNC machined to eliminate excess weight. Every component, from the piston to the seals and pushrod, mirrors those utilized in the high-stakes world of MotoGP and Wsbk racing. Unleash the full potential of your braking system with the Brembo 19Rcs Master Cylinder, offering a harmonious blend of power and precision for your ride. Features: Available in 22mm (7/8) and 25.4mm (1) sizes Forged aluminum body Hard anodized finish Adjustable and folding aluminum lever Large 19mm piston Lever ratio of 18mm and 20mm Weight: 350 gr Brake fluid: DOT 4 Mounts to most 22mm () diameter handlebars Includes universal brake light switch Includes double banjo bolt (M10x1.0) Brembo Brake Reservoir Kit available (sold separately) Brembo Remote Adjuster available (sold separately) Compatible with most OEM ABS brake systems Note: For street use Brembo includes a universal brake light switch harness that will replace your stock harness (requires cutting and splicing of stock harness).