Rear Der Shimano RD-RX815 GRX Di2 11-Speed

When the going gets gravelly

Gravel-tuned chain stabilization and drivetrain performance with electronic shifting.

The Shimano RX815 Di2 rear derailleur integrates electronic shifting with silent rear operation on rough terrain. A Shimano Shadow RD+ clutch prevents chain slapping and drops.

Key Features

• Operates with Shimano Di2 for digital electronic shifting
• Gravel-tuned clutch tension provides smooth and reliable mixed surface shifting
• Switch stabilizer On/Off to match terrain
• For 1x and 2x drivetrains
• Low sprocket max/min: 34T/30T

Features

Shimano GRX

Shimano GRX was designed from the ground up for gravel adventure. With its gravel-specific ergonomics, optimized gearing options, rugged reliability, and quiet, stable drivetrain, GRX sets itself apart from the rest of the component world.

Shadow RD+

Shimano's Shadow RD+ technology uses an adjustable rear derailleur clutch to reduce chain slap over rough terrain. This simple chain drop solution is lighter and more efficient than roller bearing chain management devices.

Specifications