Mount the StopTech 120.67080CRY Premium Cryo Treated Disc Brake Rotor (Rear) on to your 2009-2018 Ram 2500/3500 and get a quality rotor that is engineered for performance. Mill balancing greatly reduces unwanted rotor vibration and ensures your rotor delivers smooth performance. Symmetric vanes provides your rotor with proper heat transfer that prevents damage and wear. This rotor features a cryogenic cooling process that extends the service life of the rotor while also being able to handle more extreme temperatures. This fully machined rotor has improved rotor balance to provide better pedal feel when braking.