Shimano SH-RC903 S-Phyre Fietsschoenen - Zwart - 2023 Model - Fietsschoenen

Shimano's flagship racing shoe evolved with even greater comfort, less weight, and sleeker lines. Shimano DynalastThe toe-spring section of a cycling shoe plays a key role in supporting efficient pedaling. Too high, and it causes increased tension in the plantar, calf, and hamstring muscles. Too low, and you get a bowlegged, inefficient pedaling form. Extensive research by Shimano's R&D experts has produced a superior shoe last design with an optimized toe-spring section that promotes a smoother, more energy-efficient upstroke. Built based on feedback from pro riders, Shimano Dynalast helps reduce energy loss on long rides, letting you keep more in the tank for that final sprint to the line. Shimano Pedaling Dynamics SLPower transfer efficiencySPD-SL is the road specific refinement of the 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. Upper TechnologyThe construction of our uppers and closure systems are customized to the characteristics of each rider’s foot. The Surround Wrapping Upper surrounds the whole foot with a seamless piece of leather, which creates a better fit with fewer gaps between shoes and feet.