TRP, the racing arm of Tektro, builds high-performance brakes, rotors, and drivetrains. TRP's DH-R EVO brakes deliver serious stopping power with four-piston design and burly 2.3mm rotors that resist warping and manage heat. Their EVO 12 drivetrain features Hall Lock technology that eliminates drivetrain noise, silent clutch, and switchable shifting, single upshifts or sweep up to five gears at once. Race-proven components built for riders who demand braking power and smooth shifting.