The Specialized Roval Rapide CLX II 700c Carbon Wheel is built for complete speed.The Rapide CLX is actually two wheels in one, each optimized for the unique aero challenges of its position - a 51mm-deep front rim with a 35mm external width and a 60mm-deep rear rim with a 30mm external width. The result is a tubeless wheelset that’s faster than most 65mm wheels but is 25% more stable than our CLX50 in heavy wind.The Human FactorSpeed is nothing without the stability to take advantage of it. That’s where the Rapide’s unique front wheel dimensions come in - 51mm deep and 35mm wide. Roval created this shape using the same optimization algorithm that developed Specialized’s FreeFoil library ... More info