Description
Shimano SH-RC903 S-Phyre Road Shoes
The Shimano SH-RC903 S-Phyre Road Shoes are Shimano's flagship road racing shoes, engineered for elite cyclists who demand uncompromising performance. Featuring an ultra-stiff carbon fibre sole, premium microfiber upper, and dual BOA® Li2 dials, they deliver exceptional power transfer, lightweight comfort, and a precision fit trusted by WorldTour professionals. Whether you're racing, training, or chasing your next personal best, the RC903 is built to perform at the highest level.
Key Features
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Shimano's flagship S-Phyre road racing shoe
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Ultra-stiff carbon fibre composite sole with stiffness rating of 12
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Dual low-profile BOA® Li2 dials for fast, precise micro-adjustments
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360° surround wrapping upper for a secure, glove-like fit
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Lightweight, breathable microfiber synthetic leather upper
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Premium anti-twist heel cup for enhanced stability during hard efforts
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Integrated seamless midsole and upper construction reduces weight and improves fit
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Shimano DYNALAST technology enhances pedalling efficiency
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Compatible with Shimano SPD-SL (3-bolt) road cleats
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Ideal for road racing, criteriums, time trials, and high-performance training
Size chart
Shimano Men's Shoe Size Guide
| EU | US | Foot Length (cm) |
|---|---|---|
| 33 | 1.5 | 20.4 |
| 34 | 2.5 | 21.1 |
| 35 | 3 | 21.8 |
| 36 | 4 | 22.4 |
| 37 | 4–4.5 | 23.2 |
| 37.5 | 5 | 23.5 |
| 38 | 5–5.5 | 23.8 |
| 38.5 | 5.5–6 | 24.2 |
| 39 | 6 | 24.5 |
| 39.5 | 6.5 | 24.9 |
| 40 | 7 | 25.2 |
| 40.5 | 7.5 | 25.5 |
| 41 | 7.5–8 | 25.8 |
| 41.5 | 8 | 26.2 |
| 42 | 8.5 | 26.5 |
| 42.5 | 8.5–9 | 26.9 |
| 43 | 9 | 27.2 |
| 43.5 | 9.5 | 27.5 |
| 44 | 10 | 27.8 |
| 44.5 | 10–10.5 | 28.2 |
| 45 | 10.5 | 28.5 |
| 45.5 | 11 | 28.9 |
| 46 | 11–11.5 | 29.2 |
| 46.5 | 11.5 | 29.5 |
| 47 | 12 | 29.8 |
| 48 | 12.5 | 30.5 |
| 49 | 13 | 31.1 |
| 50 | 14 | 31.7 |
| 51 | 15 | 32.2 |
| 52 | 16 | 32.8 |
Shimano Women's Shoe Size Guide
| EU | US | Foot Length (cm) |
|---|---|---|
| 36 | 5 | 22.4 |
| 37 | 5–5.5 | 23.2 |
| 37.5 | 6 | 23.5 |
| 38 | 6–6.5 | 23.8 |
| 38.5 | 6.5–7 | 24.2 |
| 39 | 7 | 24.5 |
| 39.5 | 7.5 | 24.9 |
| 40 | 8 | 25.2 |
| 40.5 | 8.5 | 25.5 |
| 41 | 8.5–9 | 25.8 |
| 41.5 | 9 | 26.2 |
| 42 | 9.5 | 26.5 |
| 42.5 | 9.5–10 | 26.9 |
| 43 | 10 | 27.2 |
| 43.5 | 10.5 | 27.5 |
| 44 | 11 | 27.8 |
How to Measure Your Foot
- Place a piece of paper flat against a wall and stand on it with your heel touching the wall.
- Using a pencil or pen, carefully trace around your foot while keeping the pencil upright.
- Measure the distance from the edge of the paper (heel) to the tip of your longest toe.
- Compare your measurement with the size chart above to determine your Shimano shoe size.
Sizing Tip: Shimano cycling shoes are designed to provide a snug, performance-focused fit. If you're between sizes, Shimano recommends choosing the larger size.
