Carbon rim technology trickles down faster than it used to. The Rapide CL II front wheel shares its entire rim platform with Roval's flagship CLX II, meaning the aerodynamic shaping, carbon layup, and hooked tubeless profile are identical between the two. What separates them lives at the hub: the CL II rolls on DT Swiss 350 hubs with steel cartridge bearings rather than the ceramic-bearing units found in the CLX, a swap that drops the price point without touching the rim where aerodynamic gains actually happen.

Roval's development approach for this rim departed from conventional wind tunnel optimization. The engineering team built a modeling algorithm around rider reaction times rather than pure drag reduction, validating the results through on-road testing. The outcome is a 51mm-deep front rim that maintains stability during sudden crosswind gusts, addressing the handling nervousness that makes deep-section wheels feel sketchy on exposed roads. At 35mm external width, the rim creates a smooth transition with modern tire profiles and supports widths from 24mm up to 38mm.

The hooked rim construction allows pressure flexibility that hookless designs cannot match. Tubeless setups can run up to 110psi for riders who prefer firm tires, while tubed configurations push to 130psi. The 21mm internal channel provides a stable foundation across that tire range without the sidewall bulge that narrower rims create with wider rubber.... Read More