SHIMANO introduces the world's first extremely versatile group for gravel riders. The GRX group, provides cyclists with numerous variations and solutions, including single and two-speed drivetrains, mechanical or electronic drivetrains, 10-speed or 11-speed versions, integrated adjustable seatpost support and various gear spans. These features make the GRX perfectly equipped for any gravel trail you can imagine.

SHIMANO GRX DI2 Rear derailleur Lower sprocket max range 34T - 11-speed

The SHIMANO GRX derailleur has an integrated chain stabilizer mechanism for quiet, precise and reliable shifting in varied terrain. The derailleur has a chain tensioner switch useful when riding on level surfaces. The RD-RX815 DI2 version provides the digital precision of SHIMANO's electronic shifting systems and is compatible with road cassettes with a lower sprocket range of up to 34T.

• Adjustable chain stabilizer prevents chain from flapping and falling off
• Stabilizer can be switched on/off to match the terrain
• Clutch tension to match gravel roads
• Quiet and smooth rear gear shifting on rough terrain
• Total capacity: 38T
• Smooth and reliable gear changes on a variety of surfaces
• Compatible with the DUAL CONTROL LEVER road bike lever offered today
• Max front differential: 17T
• Top sprocket: max. 11T/min. 11T
• Lower sprocket: max. 34T/min. 30T