The SRAM HS2 Disc Brake Rotor is designed to help mountain bike riders get the most powerful and reliable stopping efficiency. This rotor features a centerlock connection and a new brake track pattern to increase pad traction. This rotor is 7 percent more powerful than previous versions and has better heat management than ever. It is also quieter and includes thermal dissipating paint. The SRAM HS2 is a great addition to your MTB setup.