The Shimano S-Phyre RC903 Women’s Road Shoe delivers pro-level performance, combining lightweight efficiency, luxurious comfort, and a women’s-specific fit. Designed for elite riders seeking maximum power transfer and all-day comfort, it features dual Boa® Li2 dials, a refined 360° Surround Wrapping upper, and Shimano’s stiffest carbon sole for ultimate responsiveness.
Key Features
- Women’s-specific fit: Tuned for lower volume and narrower heel shape for enhanced comfort and control.
- Dual Boa® Li2 dials: Low-profile, micro-adjustable system for a precise, even fit.
- 360° Surround Wrapping upper: Fully encloses the foot for superior support and pressure balance.
- Ultralight carbon sole (stiffness index 12): Shimano’s stiffest platform for maximum power transfer.
- Integrated heel stabilizer: Prevents twisting and slippage under hard efforts.
- Perforated microfiber upper: Lightweight, breathable, and form-fitting for premium comfort.
- Anti-twist sole structure: Maintains stability during high-intensity sprints.
Specs
| Intended Use | Road racing / high-performance training |
| Upper | Perforated microfiber synthetic leather with 360° Surround Wrapping design |
| Closure | Dual Boa® Li2 micro-adjustable dials |
| Outsole | Ultralight carbon composite sole (stiffness index 12) |
| Heel Cup | Integrated, anti-twist stabilization structure |
| Cleat Compatibility | 3-bolt SPD-SL / Look road cleats |
| Weight | ~220 g (per shoe, size 40) |
| Stiffness Index | 12 (Shimano’s maximum rating) |
Fit tip: The RC903 Women’s uses Shimano’s women’s-specific last for a closer, more supportive fit. Compare your measurements to Shimano’s EU size chart for the most accurate fit.