The Accossato Thumb Rear Brake Master Cylinder is a full race spec thumb brake, used at all levels of racing.
CNC-machined from solid 7075 alloy billet, with black oxide surface finish. The Piston diameter is 10.5 mm. Provided with long Lever and handlebar mounting bracket for easy mounting and positioning.
The bore & lever ratio, is designed to allow useful amounts of braking power, with only the thumb of the left hand. Brake hoses fitment is 8 mm.