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Discacciati Thumb Brake System Complete (Thumb Brake + Bracket + Reservoir + Rear Master)

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Discacciati Thumb Brake System Complete (Thumb Brake + Bracket + Reservoir + Rear Master)


Item Details

Loved by racers worldwide, the Discacciati Racing Thumb Brake System features a standard length lever design. Includes mounting bracket to bar. Discacciati has been producing Italian made sportbike components for original and aftermarket use since 1969.


This Discacciati thumb brake master cylinder works in conjunction with the Discacciati rear brake master cylinder (both billet masters included). This is popular for serious racetrack riders who want more feel and control over the rear brake. *Work in conjunction with the supplied rear brake master.


Discacciati 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.



  • Black Standard Lever
  • Material: CNC-Worked 7075 Aluminum
  • Front Piston: 13mm
  • Rear Piston: 14mm
  • Installation Bracket Included (Mounts to Bar)
  • Rear Brake Fluid Reservoir Included
  • Surface Protection: Anodized
  • Three (3) Year Limited USA Warranty



  • 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. 

 Discacciati Brake Master Cylinders. For more info visit

Discacciati Brake Systems are known worldwide for their leading design and strict adherence to the highest quality standards. Discacciati products are the result of their in-house design and production process that draws from its experience building racing motorcycles since 1969. Headquartered in Turin, Italy, Discacciati produces world class motorcycle brake components which include brake master cylinders, cnc machined calipers, rotors, brake lines, and pads. Technical support is provided by the Discacciati North American Distributor which can solve any problems with care.

 Discaciatti Brake Master Cylinders. For more info visit

MOTO-D is the exclusive North American Distributor for Discacciati Brake Systems. For more info visit

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