Zipp 303 firecrest clincher road front wheelthe zipp 303 clincher is perfection as far as road wheel design is concerned running on the 77 model hub and the firecrest rim this wheel build offers improved stiffness durability versatility and simplicity to maintain at just 725g this wheel is light enough to climb up the steepest gradients and stiff enough to hammer down the trickiest descents features hub model 77brake track width 26 4mmaxle quick releaserim carbon clincherrim depth 45m