PRO+ 6 3/4″ (170MM) BICYCLE STEEL HEAVY-DUTY ONE-PIECE CRANK CHROME W/ B.B.
Extended Length : With a 170mm arm, enjoy enhanced leverage which translates to improved pedaling efficiency and power transfer, perfect for both acceleration and climbing. Crank Specifications. Pedaling Comfort : Experience a more natural pedaling motion with the longer crank length, ideal for riders who prefer a relaxed and comfortable biking position.