Shimano SH-RC903PWR S-phyre RC9PWR Road Shoes

S-PHYRE RACING SHOES BUILT FOR POWERFUL SPRINTERS SEEKING EVERY EDGE.


Designed for track racers, speedy sprinters, and pure time trial specialists, the S-PHYRE RC903 PWR cycling shoes deliver superb comfort with optimized foot security for efficient pedaling performance when it matters most.



FEATURES

- Shimano's most efficient cycling shoe utilizes a reinforced surround wrapping upper with tongue to deliver a glove-like fit for enhanced rigidity and stability
- Race-Tuned Closure System: BOA Li2 metal dial paired with power boost guide and Velcro toe strap reduces foot movement and enhances power transmission

- Lock Down: Heel cup with anti-twist stabilization assures optimally secure foot position during intense accelerations and sustained high-cadence efforts

- Breathability: Variable size perforation holes in upper increase ventilation and add elasticity, helping accommodate a wider variety of foot shapes

- Eye-Catching: New optical coating surface treatment yields dazzling color-shifting crystal finish on outsole and heel

- Optimized Power Transfer: Ultra-stiff carbon sole and low stack height midsole that stabilizes foot results in efficient all-day pedaling performance


Efficient Power Transfer
Reinforced surround wrapping upper with tongue delivers glove-like fit for enhanced rigidity and stability, while the stiff carbon sole and low stack height midsole promote maximum pedaling efficiency for optimal power transmission.


Ultimate Foot Security
Heel cup with anti-twist stabilization enhances foot hold during intense accelerations and sustained high-cadence efforts, while BOA Li2 dial with power boost cable guide provides perfectly even closure tension for secure and comfortable pedaling performance.

SPECIFICATIONS
Stiffness index: 12 out of 12
Weight: approx. 500 g (pair)

TECHNOLOGY

SPD SL
The SPD-SL pedal system offers a seamless connection between shoe and pedal for more effective power transmission under extreme pedal loads with a wide cleat design for stability when pedaling and walking.

SHIMANO DYNALAST
The toe spring area of a cycling shoe plays an essential role in supporting pedaling efficiency. If it is too high, it can cause increased tension in the plantar, calf and hamstring muscles. If it is too low, it results in a flexed, inefficient pedaling motion. Extensive research by the R&D experts at Shimano has resulted in a superior shoe last design with an optimized toe spring area that promotes a smoother, more energy-efficient upward motion. Shimano Dynalast was developed based on feedback from professional riders and helps to reduce energy loss on long rides. This gives you more power for the final sprint across the finish line.
Limit energy loss by increasing pedaling efficiency: Between crank angles of 200degree and 360degree, there is a loss of power or energy in the backward phase of a pedal stroke. Shoes that use Shimano Dynalast help reduce this energy loss by supporting a smoother, more efficient pedaling motion. If you want to reduce fatigue, get the most out of your legs or simply perform a little better, you should ride with Shimano Dynalast.