Shimano SH-RX910 S-Phyre for gravel SPD clipless pedals

Shimano SH-RX910 S-Phyre – top-tier gravel racing shoe for SPD clipless pedals

The Shimano SH-RX910 S-Phyre is a premium gravel cycling shoe for SPD clipless pedals, specifically designed for competitive gravel racing, fast-paced gravel rides, and demanding mixed-terrain use. The model is part of the Shimano S-Phyre series, which focuses on maximum power transfer, an ultra-precise fit, and a lightweight, race-level construction. Shimano categorizes the RX910 as a gravel racing model.

Shimano SH-RX910 S-Phyre – technical SPD gravel shoe for performance riding

The SH-RX910 utilizes a carbon fiber composite midsole with a stiffness level on par with Shimano S-Phyre road shoes. Shimano lists a stiffness index of 12, making this an extremely rigid gravel shoe designed for efficient pedaling. This makes the model an excellent choice for riders who want minimal energy loss and the most direct feel possible with the pedal.

The shoe uses the Shimano Pontoon Cleat System, which is designed to improve stability between the SPD cleat and the shoe, as well as to increase pedaling efficiency regardless of cleat position. Shimano also notes that cleat pontoons are included with the shoe, and the TPU outsole and curved profile of the sole are designed to improve walking stability for gravel use. Dual drainage ports are also among the model's features.

In terms of fit, the RX910 uses an integrated seamless midsole and upper construction, an anti-twist heel cup, and a Surround upper with function-specific zones. The closure system features two low-profile BOA Li2 dials, which allow for precise fine-tuning of the fit. Shimano also emphasizes the low-stack midsole, which stabilizes the foot and optimizes power transfer.

Overall, the Shimano SH-RX910 S-Phyre is suited for the cyclist looking for the highest-performing SPD gravel shoe for races, fast training, and high-level gravel riding. This is not a soft touring shoe, but clearly a competition and performance-oriented model where stiffness, fit, and efficient pedal feel are the top priorities.

Features

• SPD-compatible gravel racing shoe for clipless pedals

• Top-tier Shimano S-Phyre series model

• Carbon fiber composite midsole

• Stiffness index 12

• Pontoon Cleat System for a more stable SPD connection

• Two BOA Li2 dials for a precise fit

• Seamless integrated upper and midsole

• TPU outsole for stable pedaling and walking

• Anti-twist heel cup

• Drainage ports for wet conditions

Technical specifications

• Intended use: gravel racing / mixed terrain / performance

• Pedal system: SPD / 2-bolt

• Compatibility: clipless pedals

• Closure: 2 x BOA Li2

• Midsole: carbon fiber composite

• Outsole: gravel racing TPU outsole

• Stiffness index: 12

• Model year: 2025

• Series: S-Phyre

• Strengths: power transfer, fit, pedal stability, competition use, walking stability