Size: 170mm crank length. This bike crank arm can help ensure ultimate chain retention, increase service life, and reduces friction and noise.
Material: The crank is made of aluminium. Premium quality makes it lightweight, stylish, flashy styling, high axial strength and compatibility and durable for long time use.
This 170mm pedal crank arm is only used on the left side of the chainring. Suitable for mountain bikes.
Function: The crank is a lever connecting the Bottom Bracket and the pedal, which can transmit the pedaling force to the chain.
If you have any problems, please feel free to contact us.