Prime cc 38 clincher road rimthe cc 38 carbon clincher road rim has been designed for use with standard caliper rim brakes and features our staggered brake track technology which moves the brake track away from the tyre bead to enhance heat dissipation and reduces the chance of tyre blow out under prolonged or heavy periods of braking for optimum braking performance we recommend you only use prime carbon pro brake pads our 25mm wide rim profile is optimised for use with wider tyres ranging from