Clarks range of floating rotors feature carriers manufactured from aerospace grade materials, combined with stainless steel braking bands. Due to the two piece design of the rotor, this drastically reduces the amount of heat transfer, making the floating rotors less vulnerable to warping and provides the rider with consistent performance. Clarks lightweight floating rotor provides superb braking characteristics regardless of conditions.Key Features:7075 Grade alloy carrier offers superb heat resistant characteristics reducing the chances of rotor warp during prolonged braking.420CR Steel braking band offers a superb quality surface to get the very best brake performance from your system regardless of conditions.Weight: 140mm (86g), 160mm (108g), 180mm (135g), 203mm (158g)