The lightest and most efficient Dura-Ace pedal that Shimano has ever made. Rigid and lightweight construction paired with an extra-wide platform and wide bearing placement add up to ultimate power transfer and pedaling efficiency. The PD-R9100 is the top choice for the road racer, triathlete, or serious cyclist. Available in standard or 4mm longer axle models. Features: The PD-R9100 is the Top of the Line Road Bike Pedal: The lightest and most efficient Dura-Ace pedal we have ever made. Lightweight & Stiff: Injection-molded carbon composite body is lightweight and rigid for optimal pedaling performance. Excellent Power Transfer: Extra-wide platform to transfer your power directly from you to your bike. Stabil