Description
AL7075-T6 charing+Al6061-T6 Crank arm, compatible with a wide range of bikes, 104bcd specification, 4-spider locked by bolts. Through integrated forging and CNC machining, it ensures moderate weight while maintaining precise dimensions. Options include a 68, 73mm bottom bracket, or compatible with square tab, with a wide range of choices from 30T to 40T.







