Crank Length Calculator
Cranks arms make the legs go round. Available in 100mm, 135mm, 145mm, 155mm, 165mm, 175mm crank lengths with 10mm increments. Why 10mm increments? Because it makes a difference.
The body can perceive as little as 1mm in difference in crank length, but 10mm actually changes the angles of the knee and hip a useful amount.
Strong and stiff, the pocketing in the insides of the crank arm reduce weight while minimizing stress risers and maximizing fatigue life.