The specialized roval clx 40 carbon clincher 700c wheel rear the clx 40 full carbon clincher is the perfect all around race wheel proven by multiple grand tour wins the aerodynamic optimized rim shape slices through the wind while preserving the confident stable handling of a box section rim a wide internal rim width provides an optimal tyre profile for incredibly precise handling and stiffness specialized roval clx 40 carbon clincher 700c wheel rear features rim type carbon clincher