From sprinting on the flats to climbing steep inclines, the 11-34T cassette has you covered. It is compatible with both Shimano 11-speed and 12-speed freehub bodies. Features Refined 12-step gear combination provides peak efficiency and accelerating performance for every situation. Compatible with both Shimano 11-speed and 12-speed freehub bodies.
Best Price: £49.99 from Merlin Cycles