The legacy of Shimano design, quality and performance. Shimano’s PD-R550 Road Pedals feature a composite body construction and a durable stainless-steel body plate which reduces flex and wear. Offering a wide spring tension adjustment range, larger entry target for easier engagement, extra-wide platform for maximum efficient transfer of power and a wide bearing placement for stable, uniform load distribution. Shimano’s Tiagra set offers progressive all-road performance, for serious riders on an entry level budget, with cascaded technology from the top-tier lines. SPD-SL is the road specific retention system, this pedal platform was designed specifically for the needs of world-class road racers. The seamless pedal and cleat interface for a more efficient power transfer under the extreme pedaling loads encountered in race competitions.