TRP Centrelock RotorTRP's two-piece rotors offer superior heat dissipation due to the aluminium centre as well as excellent stiffness to provide you with confidence in your braking. Upgrade the stopping power and heat dissipation by increasing the size of your rotor giving you more surface area and leverage. Features: Excellent heat dissipation Aluminium spider body channels heat away quickly Compatible with Centrelock hubs only Lock ring not includedBuy TRP Components from Chain Reaction Cycles, the World's Largest Online Bike Store.