Based on BRAKING off road world championship experience, the new semifloating disk for the racing bicycle industry. Constant performance in any conditions. Why semifloating? It provides the best balance between warping resistance (thanks to the mechanism) and lateral resistance to side impacts (thanks to the fixed shape). WaveDesign Semi-Floating Mechanism. Outer and inner diameter of the disk have a non-round design that enables better radial expansion of the rotor under extreme heat conditions. Moreover piercing holes are replaced by edges specifically designed to grow brake pad regeneration process. Features: More braking grip, less weight and high heat dissipation. Benefits: Highly reactive, better handling and stable power at all conditions; Torx screws with special Loctite that is included in the packaging. Recommended for Freeride, Downhill and Enduro. Accessories: P20 sintered pads, P21 organic pads, Center Lock adapter CK0001. OD: ñÿ 200. Weight: 175.8 grs. Note: When used with Shimano center lock applications, S3 rotors can ONLY and EXCLUSIVELY be used with Braking Center Lock adapter (CK0001).