The best value carbon wheel tyre system now available in a disc brake specific version weight 1770 grams pair without tyre the best balance of low frontal drag and crosswind stability 45mm deep naca profile brings low drag in any conditions 25mm external rim width perfectly integrates the 25mm tyre giving you low drag and easy crosswind steering patented elliptical spokes enhance aerodynamics perfect efficiency and low weight 17c internal rim width for low rolling resistance with 25mm tyres