TRP 4-Piston Performance Resin Pads Increased Heat Stability When it comes to your hydraulic disc brakes, you should be replacing the pads when they begin to wear out. The TRP 4-Piston Performance Resin Pads are made with a performance resin compound that provides increased heat stability, a shorter bed-in process, and a lighter lever feel. It is designed to fit all TRP 4-piston calipers and Tektro Orion 4-piston calipers. Features Increases power transfer with a snappy initial bite Fits all TRP 4-piston calipers as well as Tektro Orion 4-piston calipers Performance resin compound provides increased heat stability, a shorter bed-in process, and a lighter lever feel | Trp | 4-Piston Performance Resin Pads Resin 4 Piston Pad