The Shimano GRX RD-RX400 rear derailleur is designed for 10-speed drivetrains, delivering reliable and precise shifting across mixed terrains. Its integrated chain stabilizer mechanism ensures consistent performance, even on rough trails or gravel paths.

Quieter Rides on Any Surface: Engineered with an innovative chain tensioner, this derailleur reduces chain slap and noise, offering a quieter and more enjoyable ride. The On/Off switch allows you to control the stabilizer function, adapting to both smooth roads and rugged trails with ease.

Durable Construction for Adventure: Built for gravel and mixed-terrain adventures, the RD-RX400 features a robust design to withstand challenging conditions. Its durable construction ensures long-lasting performance, no matter where your rides take you.

Smooth and Efficient Shifting: With Shimano's trusted precision engineering, the GRX derailleur provides smooth and reliable shifts, helping you maintain cadence and momentum during climbs, descents, or rapid terrain changes.

The RD-RX400 is compatible with a wide gear range, making it ideal for riders looking to tackle diverse terrains. Whether on gravel roads, trails, or urban streets, this derailleur is a dependable choice for any 10-speed setup.