The mavic cosmic carbon 40 elite clincher wheel set has proven to provide the most reliable braking performance making it the safest and most reliable carbon clincher technology on the market at 460g it is also amongst the lightest aero clincher rims enabling a very dynamic ride these mavic road wheels are the ultimate in fast wheelsets ideal for road time trials and triathlons the 40 elite clincher wheels features mavic39s pioneering wheel tyre system which incorporates the mavic yksi