MWC Performance Toggle Search Account Checkout Cart Monkey Works Cycle News Gallery Products Continental Tires Continental Street Tires Continental Race Tires Controls Chain Adjusters Master Cylinders Rearset Kits Rearset Accessories Moto-D Racing Rapidbike SBS Brakes SBS Dual Carbon Brake Pads SBS Dual Sinter Brake Pads Tools Racing About Track Days Club Races Racing Team Services Collision Repair Dyno Tuning Suspension Contact Us Search site Submit search Nav Menu 2 Nav Menu 3 Nav Menu 4 Nav Menu 5 Nav Menu 6 Nav Menu 7 Nav Menu 8 Home > Products > Controls > Master Cylinders > ACCOSSATO 17X PRS ADJUSTABLE RADIAL BRAKE MASTER CYLINDER W/ FOLDING LEVER RST Alternative Views: Our Price: $279.99 Quantity in Stock:(Out of Stock) Product Code: MD-ACC-CY080-L-RST Qty: Description Technical Specs Extended Information Loved by racers worldwide, the Accossato 17PRS radial brake master cylinder for sportbikes feature a folding, standard length RST lever with anti-drag inlet hole. The forged aluminum cylinder is stronger and lighter than stock cast units for maximum reliability. The variable lever ratio of the 17PRS makes it the perfect option for motorcycles with a dual disc brake rotor setup since it allows the rider to tune up or down the brake feel and response to meet their individual riding style. Accossato has been producing Italian made sportbike components for original and aftermarket use since 1969.This brake master cylinder has the revolutionary Accossato PRS system which allows the rider to make tool free adjustments of the lever center distance selecting between the moderate (17 mm), firm (18mm), or most responsive (19 mm). The advantage of the Accossato PRS comes from the relationship of the piston which is kept “in-axis” (meaning on a "straight line") as it acts on the position of the fulcrum during all lever adjustments. For this reason, the power of the Accossato PRS 17x-17-18-19 is an upgrade over other variable distance master cylinders. This technology was invented by Accossato, is not found on the RCS, and guarantees a more precise, immediate, and powerful feel with reduced wear on the internal gasket, piston, and cylinder wall. This brake master uses a 17mm diameter piston and a upgraded racers folding, standard length RST lever which features an anti-drag inlet hole machined into the lever end for the passage of air at high speed. This is a popular choice for serious street and racetrack riders campaigning Yamaha R6 and Yamaha R1 sportbikes.Accossato produces race quality master cylinders and braking components using a 100% quality-control process mandating all core components to be inspected under a microscope before assembly, pressure calibrated, and vacuum tested upon final assembly. Folding Lever: (adjustable) 19mm x 17mm (track use), 19mm x 18mm, 19mm x 19mmMaterial: Pressure Forged AluminumPiston: 17mmDisc Application: DoubleSurface Protection: AnodizedStandard Folding Lever w/ RST Part#: ACC-LV005N-PRS-L-RSTShort Folding Lever Part#: ACC-LV005N-PRS-CExclusive Three (3) Year Limited USA Warranty ITEMS REQUIRED TO COMPLETE INSTALLATIONWe suggest using the Accossato 30ml Brake Reservoir Mounting Kit (Part# ACC-KITVG) as it includes a reservoir, bracket, hardware and tubing.The 17PRS includes a double hole banjo bolt with 3 copper washers. This will work if you have 2 brake lines coming off the master cylinder. If you only have 1 line off the master you will need a M10x1.0 Single Hole Banjo Bolt Part#: ACC-MS2365.If you wish to retain brake light functionality you will require a Double Hole Inline Brake Light Pressure Switch Banjo Bolt Part#: ACC-ID002.If you intend to use your stock reservoir you will require a length of 6mm Tygon 2375 Tubing and 2 3/8" Spring Clamps.Dot 4 Brake fluid will be needed. We suggest replacing all of the fluid in the system when you install the master. Do NOT use Dot 5.1 Brake Fluid. Share your knowledge of this product. Be the first to write a review »