For professional use and those demanding the best, the Accossato 19PRS billet aluminum radial brake master cylinder with variable lever ratio makes it the ultimate weapon for competition race bikes which use on double 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. The master cylinder has a 19 mm piston and is CNC machined to meet the exact tolerances for extraordinary braking performance and feel required during racing. 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 (18 mm), or most responsive (19 mm). The advantage of the Accossato PRS comes from the relationship of the piston which is kept "in-axis"during all lever adjustments for a direct, immediate, and more powerful feel. This technology, which pivots on the fulcrum, was invented by Accossato and reduces wear on the internal gasket, piston, and cylinder wall. For this reason, the Accossato CNC Machined PRS 19x-17-18-19 is one of the most advanced brake master cylinders available today.
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) 19 mm x 17 mm (track use), 19 mm x 18 mm, 19 mm x 19 mm.
Material: Billet aluminum.
Piston: 19 mm.
Disc application: Double.
Surface protection: Anodized.
The short length lever is a popular choice for riders who have smaller hands or wish for the lever to be accessed easily towards the center of the bike and for stunt riding.
The standard length RST lever 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 track and race riders.
Exclusive three (3) year limited U.S.A. warranty.
Items required to complete installation:
Accossato suggests using the Accossato 30 ml Brake Reservoir Mounting Kit (P/N ACC-KITVG; sold separately) as it includes a reservoir, bracket, hardware and tubing.
The 19PRS includes a double hole banjo bolt with three copper washers. This will work if you have two brake lines coming off the master cylinder. If you only have one line off the master you will need a M10x1.0 Single Hole Banjo Bolt (P/N ACC-ACC-MS2365; sold separately).
If you wish to retain brake light functionality you will require a Single Hole Inline Brake Light Pressure Switch Banjo Bolt (P/N ACC-ID002; sold separately).
If you intend to use your stock reservoir you will require a length of 6 mm Tygon 2375 Tubing and 2-3/8" Spring Clamps (all sold separately).
Dot 4 brake fluid will be needed. Accossato suggests replacing all of the fluid in the system when you install the master. Do NOT use Dot 5.1.