Shimano GRX RD-RX400 – Dérailleur Arrière 10 Vitesses M7100 A reliable upgrade to improve

A reliable upgrade to improve steering precision and fluidity

they are lightweight

Dynamic Light fluid can be used as a direct replacement in all 0w30 fluid forks

Constructed with Bluesign® certified recycled materials

or with fast shipping across Canada

Shimano GRX RD-RX400 – Dérailleur Arrière 10 Vitesses M7100 A reliable upgrade to improveThe Shimano GRX RD RX400 rear derailleur is built for adventure and gravel riders who demand consistent shifting and reliability. Featuring Shadow RD+ technology, it minimizes chain slap and noise for smoother, quieter performance across rough terrain. Made from lightweight aluminum, it offers excellent durability while maintaining responsive performance. With a total capacity of 41 teeth, its compatible with 1132T cassettes, delivering an ideal gear