A high-performance and versatile road shoe The Shimano RC503 Black is aimed at cyclists looking for a lightweight, stiff, and comfortable shoe for their training, sportives, and competitions. Inspired by Shimano's high-end racing models, it offers an excellent balance between power transfer, support, and comfort over long distances. Its black colour gives it a sober and sporty look, easy to match with any outfit. It also has the advantage of being less susceptible to marks and road spray. Precise adjustment with the BOA system The shoe uses a BOA® L6C dial combined with a lacing pattern developed by Shimano. This construction distributes tension across the entire forefoot and provides precise support without creating multiple pressure points. The dial allows for quick adjustments, even while riding. The system replaces the strap at the front of the foot from the previous generation to improve the shoe's precision, comfort, and aesthetics. A wrap-around and breathable upper The perforated synthetic leather upper wraps the foot, limiting material overlap. This structure provides a glove-like fit and improves stability during accelerations, climbs, and sustained efforts. The perforations promote air circulation and heat dissipation. The seamless integration between the upper and the midsole reduces friction zones while enhancing foot support. A carbon fibre-reinforced sole The carbon fibre-reinforced nylon midsole has a stiffness index of 8 out of 12. It limits deformation during pedalling and efficiently transfers power to the pedals, while retaining enough tolerance for long rides. Its low stack height brings the foot closer to the pedal axle to improve stability and the feeling of connection with the bike. The Shimano Dynalast shape also promotes a smooth and natural pedalling motion. A more responsible design Shimano incorporates 23% recycled materials by weight in the toe box and midsole. This evolution reduces the use of virgin materials without compromising the shoe's stiffness, stability, or durability. Compatible with three-bolt road cleats The Shimano RC503 is compatible with three-bolt road cleats, including the Shimano SPD-SL system. It can be paired with Shimano PD-R7000 pedals to form a coherent, high-performance set suitable for regular road cycling. Cleats are usually supplied with the pedals and must be installed separately. Their position should be carefully adjusted to ensure comfortable pedalling and to limit joint stress. Use: road cycling Audience: men Closure system: BOA® Fit System with L6C dial Lacing: pattern developed by Shimano Upper: perforated synthetic leather Construction: wrap-around and seamless Midsole: carbon fibre-reinforced nylon Stiffness index: 8 out of 12 Last: Shimano Dynalast Compatibility: three-bolt road cleats, including Shimano SPD-SL Recommended pedals: Shimano PD-R7000 Weight: approx. 254 g per shoe in size 43 Recycled materials: 23% in the toe box and midsole Sizes: from 38 to 50 depending on availability Wide version: available in selected sizes Colour: black Cleats: sold separately