Description
Crank: 170mm , Chainring : 24/34/42T , Axle : Taper square 120mm , Chain line : 48.5mm , Speed: 3x7S,3x8S,3x9S The bicycle crank is made of aluminum alloy, which increases the rigidity of the crank and reduces the weight, so the biting force between the crank and the bottom bracket is more even. Square axle paired with 120mm width and M8 threaded locking provides high-strength connection, effectively resisting deformation from pedalling torque. Bike crankset with light and reliable shifting ; Wide compatibility with multiple components and Quick and precise assembly. Optimised 48.5mm chainline design ensures minimal chain inclination across all gears in the 3x8 systems, reducing friction and chain derailment probability. The 24T small chainring paired with a 34T middle chainring delivers a climbing gear ratio below 1:1, meeting off-road exploration demands. The triple chainring design is compatible with 8-speed systems and can accommodate 7-9 speed rear derailleurs.