Accossato HRMC rear brake master cylinder for motorcycles is in CNC-worked aluminium with a superficial hard oxidation tratment in black. The Piston diameter is 13.5 mm. It is Provided with specific bracket for mounting, designed to optimize the volumes. Accossato Rear Brake Master Cylinder HRMC enables to activate the rear brake with the left hand, easing and correcting the entrance incurve, in order to modulate the braking process. Brake hoses fitment is 10 mm. We don't recommend to use it with rear brake master cylinders.