Shimano Shoe RC903
Shipping Info
Shipping normally takes 3-5 business days. We don't ship on weekends or public holidays.
We offer flat-rate shipping in South Africa. We also offer local pickup from our stores around Cape Town.
International orders carry a minimum spend of R5,500, and takes 7-30 business days to arrive depending on customs.
Bike Size Guide
Choosing the right bike size can be overwhelming, click here to view the general size guide to make things a little bit easier.
Financing Options
Get the bike you want now and pay later with Yonda and Rola Bicycle Finance.
Easy application, fast approval, and tailored repayment plans.
Ride now, pay your way.
What Is It?
The Shimano S-PHYRE RC903 Road Cycling Shoes are Shimano’s flagship professional-level road racing shoes, designed for elite competition, maximum power transfer, and high-efficiency pedalling. Built around Shimano’s advanced S-PHYRE platform, the RC903 combines an ultra-stiff carbon sole, precision BOA® fit system, lightweight construction, and a secure race-oriented fit for demanding road cyclists.
The RC903 uses Shimano’s DYNALAST ergonomic shoe shape, a redesigned wraparound upper, and an anti-twist heel cup to stabilise the foot during hard accelerations and sprint efforts while reducing energy loss through unwanted movement.
Key Benefits
-
Professional Race Performance:
Developed for competitive road racing with a focus on speed, stiffness, and efficient power transfer. -
Ultra-Stiff Carbon Composite Sole:
Maximises energy transfer from the rider to the pedal while minimising flex during high-power efforts. -
Dual BOA® Li2 Dial Closure:
Provides precise micro-adjustment and a secure, even fit across the foot. -
Anti-Twist Heel Cup:
Helps lock the heel in place during sprinting, climbing, and high-cadence efforts. -
Lightweight Microfiber Leather Upper:
Offers a snug, aerodynamic fit with perforated ventilation to improve airflow and comfort. -
SPD-SL Compatible:
Designed for Shimano’s 3-bolt road pedal system for maximum road cycling stability. -
Improved Toe Box Fit:
The RC903 features a refined front section designed to provide better comfort while maintaining race-level foot retention.
Specifications
| Specification | Details |
|---|---|
| Product | Shimano S-PHYRE SH-RC903 Road Shoes |
| Series | S-PHYRE |
| Category | Road Racing |
| Cleat Compatibility | Shimano SPD-SL (3-Bolt) |
| Closure System | Dual BOA® Li2 Dials |
| Upper Material | Microfiber Synthetic Leather |
| Sole Material | Carbon Composite |
| Technology | DYNALAST Fit System |
| Heel Support | Anti-Twist Stabilising Heel Cup |
| Ventilation | Perforated Upper |
| Weight | Approx. 250 g per shoe (size 42–43 range, varies by size) |
| Colour Options | Black, White, Blue, Red (depending on availability) |
| Sizes | Multiple sizes including half sizes and wide options in selected markets |
Compatible Components
The Shimano RC903 is compatible with:
Pedals
- Shimano SPD-SL road pedals
- Dura-Ace PD-R9100
- Ultegra PD-R8000
- 105 PD-R7000
- Other Shimano SPD-SL models
Cleats
- Shimano SM-SH12 SPD-SL Blue Cleats
- Shimano SM-SH11 SPD-SL Yellow Cleats
- Shimano SM-SH10 SPD-SL Red Cleats
Bikes
- Road racing bikes
- Aero road bikes
- Time trial / triathlon bikes
- Performance endurance road bikes
Who Is This Best Suited For?
The Shimano S-PHYRE RC903 is ideal for:
- Professional racers
- Competitive road cyclists
- Gran Fondo riders
- High-mileage endurance cyclists
- Riders seeking maximum pedalling efficiency
- Cyclists upgrading from mid-range road shoes
- Riders who prioritise stiffness and precise fit
