TRP'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. TRP'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.