Newly 3D designed SL splined cranks, use a whole 7075 - T6 aluminum sheet and adopting the CNC processing technique. The new cranks will be splined instead of the traditional 1.37''*24T threaded design. The new design ensures correct alignment of the freewheel, chain and sprocket reducing skipping. It is also easier assemble and disassemble allowing for easier freewheel changes. Available in 4 sizes: 160mm / 165mm / 170mm / 175mm Light Weight: 160mm=372g / 165mm=378g / 170mm=393g / 175mm=399g Available in anodized red, gold, blue, silver and black
