TRP SPYRE POST-MOUNT MECHANICAL BRAKEBY THE SPYRE! Disc brakes have come a long way since they were first invented. They were always only on mountain bikes but now are widely adopted on CX and road bikes. The TRP Spyre Post-Mount Mechanical Brake utilizes a two-piston movement for evenly applied rotor contact, resulting in optimum braking power and modulation. The ramped ball bearings offer smooth pad engagement and precise modulation. These brakes are intended for road, cyclocross, and gravel bikes with drop-bar levers. Features Two piston movement for evenly applied rotor contact Ramped ball bearings offer smooth pad engagement and precise modulation Designed for road, cyclocross, and gravel | Trp | Spyre Post-Mount Mechanical Brake | Black |Silver, 74Mm Post Mount