Model: Shimano S-Phyre RC9

Tested by: Ole

Test duration: 6 months, varied riding conditions

Price: MSRP €450 (often found for €350-€400)

Material: Carbon sole, synthetic microfiber upper, BOA dial closure system

Target group: Competitive road cyclists seeking top-tier performance and comfort

First Impressions

Right out of the box, the Shimano S-Phyre RC9 impresses with its sleek, aerodynamic design and premium build quality. The shoes feel rigid yet lightweight, thanks to the full carbon sole that promises excellent power transfer. The upper combines supple synthetic microfiber with a breathable mesh, giving a refined look and a close, sock-like fit.

The dual BOA dials offer smooth, precise micro-adjustments and secure closure, while the heel cup feels supportive without causing discomfort. The shoes exude a high-end feel, clearly aimed at riders who want race-level performance and technical innovation.

Comfort & Fit

The S-Phyre RC9 fits snugly but never feels overly tight, thanks to the engineered upper materials that conform to your foot shape. The combination of the microfiber and mesh ensures breathability while maintaining a lockdown fit that minimizes foot movement inside the shoe.

Shimano S-Phyre

BOA dials allow for easy on-the-fly adjustments, which is great during long rides or races. The heel cup holds the foot firmly in place without rubbing or pressure points. The stiff carbon sole ensures maximum power transfer with minimal energy loss, which benefits aggressive pedaling and sprint efforts.

Despite the stiff sole, the shoe manages to provide enough cushioning through the footbed and insole to stay comfortable on longer rides. However, the fit is performance-oriented and might feel tight for wider feet.

Pro Tip:

If you have wider feet, consider the Shimano S-Phyre RC903 Wide (W) model — it’s specifically designed to offer more room and comfort without compromising performance.

Long-Term Impressions

After six months and hundreds of kilometers, the Shimano S-Phyre RC9 has proven highly durable. The upper materials show minimal wear and maintain their shape without stretching or sagging. The carbon sole remains stiff and unscathed, continuing to provide excellent power efficiency.

The BOA closure system has held up flawlessly, retaining smooth adjustment capability without any loosening or slippage. Ventilation has performed well across various weather conditions, keeping feet cool during intense efforts.

Shimano S-Phyre Untersohle

Comfort remains consistent, with no development of pressure points or hotspots, even after extended rides. The shoe's ergonomic design supports foot stability and reduces fatigue, reinforcing its suitability for competitive cyclists who demand both performance and comfort.

Sweet / Sour – Conclusion

🥭 Sweet

• Exceptional power transfer: Stiff carbon sole delivers responsive pedaling efficiency.

• Premium fit and materials: Sock-like upper adapts well to foot shape with breathable mesh panels.

• Precise closure system: Dual BOA dials offer effortless micro-adjustments on the go.

• Durability: Maintains shape, support, and performance after extensive use.

• Comfort on long rides: Despite stiffness, well-cushioned footbed and ergonomic design reduce fatigue.

🍋 Sour

• Price: At around MSRP €450, these are a significant investment and out of reach for budget riders.

• Break-in period: While not overly harsh, some riders might need a few rides to fully adjust to the stiff sole and snug fit.

• Ventilation limitations: Ventilation is good but not exceptional in very hot climates or during extremely long rides.

Rating (1–5 stars)

Verdict

Overall rating: ⭐⭐⭐⭐☆ (4.4/5)

The Shimano S-Phyre RC9 is a top-tier road cycling shoe that excels in delivering outstanding power transfer, precise fit, and durability. Its combination of premium materials, a stiff carbon sole, and a sophisticated BOA closure system make it ideal for competitive cyclists who demand peak performance and long-lasting comfort.

While the narrow fit and premium price might deter some, serious riders will appreciate the shoe’s ability to combine race-ready stiffness with sufficient comfort for longer rides. If you prioritize performance and don’t mind investing, the S-Phyre RC9 is a standout option in the high-end cycling shoe market.

Recommended for: Competitive road cyclists and racers looking for a durable, high-performance shoe with excellent fit and power efficiency.

Disclosure: We purchased the Shimano S-Phyre shoes by ourselves for this review and were not compensated by the manufacturer. Our testing and opinions are completely independent.