Cassette Sprocket, CS-R8101, Ultegra, 12-Speed, 11-30T F25 while the perfectly balanced design

while the perfectly balanced design provides safe

from spring through summer and fall - you'll be a happy camper if you wear your Ferrosi

a nubuck leather upper

EnergyCell: A high performance EVA foam that provides shock attenuation

Cassette Sprocket, CS-R8101, Ultegra, 12-Speed, 11-30T F25 while the perfectly balanced designNew tooth profile designed to work with both electronic and mechanical Shimano drivetrains. Tooth profile slightly changed to better accomodate mechanical shifting For Di2 and Mechanical Shifting Systems Refined 12 step gear combination provides peak efficiency and accelerating performance for every racing situation Faster, smoother shifts under maximum pedaling force Compatible with new 12 speed (HG Spline L2) and road 11 speed (HG 11) freehub bodies