Do Bikes Come In Standard Pedal Arm Sizes?
Do Bikes Come In Standard Pedal Arm Sizes? The three most common crank lengths for bicycles are 170mm, 172.5mm and 175mm. What size your bike has will likely depend on what size the frame is. Small bikes tend to come with 170mm cranks, medium with 172.5mm and large with 175mm. Do all pedals fit all