The best value carbon wheel tyre system reinvented to be lighter more dynamic and with improved aerodynamics newthe cosmic pro carbon has been a favorite with racers for over two decades when it first launched as one of the very rims to use carbon it was mainly used for racing on the flat however year after year weve made tweaks and improvement so this wheel now delivers a superb climbing performance giving it the versatility it was once missingalloycarbon hybridat only 1650g with a 45mm