Shimano GRX RD-RX400 – 10-Speed Rear Derailleur

The 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, it’s compatible with 11–32T cassettes, delivering an ideal gear range for climbing or long descents.

Designed to work perfectly with Shimano Dual Control 10-speed shifters, the GRX RD-RX400 provides stable, precise shifting in every condition.

Key Features:

• Speed: 10-speed

• Compatibility: Shimano Dual Control 10s shifters

• Total Capacity: 41T

• Max Sprocket: 32T

• Min Sprocket: 11T

• Material: Aluminum

• Included: 1x Shimano GRX RD-RX400 10-speed rear derailleur