Suitable for all Shimano road cranksets with integrated axle Ø 24 mm. Optimized sealing system with reduced friction. BSA thread (1,37 x 24 tpi). Italian thread (36x 24 tpi). Hollowtech II: high stiffness, low weight and improved power transfer thanks to a firm connection between the bottom bracket axle and the right crank. Material: anodized aluminium, carbon fibre reinforced plastic. Weight: 65g.
