Beautiful balance using a 45 mm deep naca profile creates low drag in any condition pair this with a perfectly integrated 25 mm external rim width and 25 mm tyre to give you low drag and easy crosswind steering perfect efficiency and low weight 17 mm internal rim width offers low rolling resistance with 25 mm tyres giving you low friction and fast engagement exalith treatment for optimal braking the mavic exclusive exalith 2 technology for aluminium rims has been refined to provide a very hi