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Brembo 15mm RCS Corsa Corta RR Billet Radial Brake Master Cylinder

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Brembo introduces the new CORSA CORTA RR – Race Replica, a further evolution of the radial master cylinder concept. Many new features have been introduced for this new radial brake master cylinder, the closest to those used in top motorbike racing. Machined from billet, like the master cylinder used in MotoGP and SBK, the design of the new Brembo RCS CORSA CORTA RR has been modified to make it lighter and even more similar to the racing versions. The hard oxidized finish, in titanium grey, ensures outstanding wear resistance and extremely low friction between moving parts. It comes in a darker color than the previous version, precisely because of the type of treatment, making it even more similar to the versions used in Moto2 and Moto3.

The floating piston and gaskets are the same as the components used in MotoGP, as are the bleed and brake fluid delivery circuit couplings. These are inclined by over 30° to facilitate bleeding of the master cylinder.

The lever, modified in shape, retains its characteristic feature that has made it famous among enthusiasts: it allows the riders to tailor the “bite point” exactly where they want it, with an easily accessible selector on the top of the master cylinder itself. The selector operates a cam mechanism to let the user choose between three different responsiveness settings.

IMPORTANT NOTE: We recommend purchasing the Brembo Brake Reservoir Mounting Kit for RCS and other Brembo Master Cylinders (Sold Separately) with this master cylinder. This reservoir is designed to work with the Corsa Corta (other Brembo masters as well) to get the most professional end result.


The selector operates a cam mechanism to let the user choose between three different responsiveness settings.

In the Normal setting, indicated on the master cylinder with the letter N, the bite point starts more gradually, making it suitable for city riding or braking in poor grip conditions.

In the Sport setting, indicated on the master cylinder with the letter S, the beginning of the bite point is shorter than in the N setting. This setting produces a more dynamic response suitable for sportier riding.

Lastly, in the Race setting, indicated on the master cylinder with the letter R, the position of the cam mechanism shortens the initial stage of the bite point even further to produce the same immediate response of the master cylinders used in MotoGP, letting the rider reach the bite point of the brakes instantaneously. This setting is ideal for use on the race track, where every hundredth of a second shaved off a lap time counts.

By simply changing from one setting to another, the rider can configure the braking response and feel of the bike immediately and predictably.

The Brembo radial master cylinder has revolutionized braking systems over the past few decades. Conceived originally for racing use, it has over the years become an increasingly sought-after solution for Supersports and Naked bikes. Despite its appearance on production models, the radial master cylinder is still a thoroughbred racing solution and continues to be used in MotoGP.

Now every rider can drastically improve the braking performance of their mid or large size motorcycle and benefit from the many advantages of Brembo's decades of experience in braking systems simply by replacing the original equipment radial master cylinder with a Brembo radial product.

Fitment Recommendation: 15 RCS Corsa Corta RR is designed for motorcycles with a single front caliper.

Items required to complete installation:

  • We suggest using the Brembo Brake Reservoir Mounting Kit (Brembo Part# 110.A263.85) as it includes a reservoir, bracket, hardware and tubing.
  • The 19RCS includes a double banjo bolt with 4 copper washers. This will work if you have a 2 brake lines coming off the master cylinder. If you only have 1 line off the master you will need a M10x1.0 Single Banjo Bolt Brembo Part# 06.2228.76 or equivalent.
  • If you intend to use your stock reservoir you will require a length of 6mm Tygon 2375 Tubing and 2 3/8" Spring Clamps.
  • Brake fluid will be needed. We suggest replacing all of the fluid in the system when you install the master.
  • The Speed Bleeder Bag and Hose Kit is a real asset when bleeding the brakes. It can keeps the job clean and can be reused.