Shimano 105 CS-R7101 12 Speed Cassette Size:11-34 and has a combination of

and has a combination of extreme pressure lubricity additives and natural ‘slip’ giving it unrivalled performance in its class

GSC-1 GearClean™ Brush

4 compounds in the tread (4C) for unparalleled traction on technical courses

Hangerless Full Mount derailleur interface for maximum precision

5mm in 79mm wide shell*

Shimano 105 CS-R7101 12 Speed Cassette Size:11-34 and has a combination ofA 12 speed cassette range that brings versatility to any rider or road. From sprinting on the flats to climbing steep inclines, the Shimano 105 CS R7101 12 Speed Cassette (11 34T) has you covered, compatible with both Shimano 11 speed and 12 speed freehub bodies. Features For Di2 and mechanical shifting systems Refined 12 step gear combination provides peak efficiency and accelerating performance for every situation Compatible with new 12 speed (HG