The Shimano RD-RX400 Grx Rear Derailleur 10Spd is a high-performance component designed for smooth and precise shifting on gravel and adventure rides. Weighing just 251g, this rear derailleur offers a lightweight yet durable construction. The Shadow RD+ technology provides a quieter and more stable riding experience by reducing chain slap and maintaining proper chain tension. With a maximum sprocket size of 34T and a total capacity of 39T, the RD-RX400 Grx is compatible with 10-speed drivetrains. Its low-profile design ensures compatibility with a wide range of frame designs, while the clutch mechanism enhances chain retention over rough terrain. Upgrade your gravel bike with the Shimano RD-RX400 Grx Rear Derailleur 10Spd for reliable and efficient performance on your off-road adventures.