Di2 RD-RX817 11 Speed Shadow+ Single Rear Mech

Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world

RD-RX817: SHIMANO GRX DI2 Rear Derailleur - SHIMANO SHADOW RD+ - 42T Maximum Low Sprocket - 11-Speed

The SHIMANO GRX derailleur, featuring an integrated chain stabilizer mechanism, offers a quieter and more secure shifting experience on mixed terrain. A switchable ON/OFF chain tensioner allows for seamless shifting on both smooth and rough surfaces. The RD-RX817 DI2 version takes advantage of SHIMANO's electronic shifting technology, providing precise and synchronized shifting. It is compatible with mtb cassettes with a maximum low sprocket of 42T.

Features:

- Silent and uninterrupted rear shifting on rough terrain
- Adjustable chain stabilizer prevents chain slapping and drops
- SHIMANO SHADOW RD+ technology for smooth and reliable shifting
- Switchable stabilizer ON/OFF for optimal performance on various terrain
- Gravel-tuned clutch tension for optimal performance
- Compatible with current road DUAL CONTROL LEVER
- Top sprocket: Maximum 11T, Minimum 11T
- Low sprocket: Maximum 42T, Minimum 40T

Specifications:

-Model Number: RD-RX817
-Series: GRX DI2
-Color: Series color
-Weight: 318 grams (average)
-Rear Speeds: 11-speed
-SHIMANO SHADOW RD-
-Mounting Options: - Direct attachment (conventional) - direct mount
-Total Capacity: 31T
-Low Sprocket: - Maximum 42T - Minimum 40T
-Top Sprocket: - Maximum 11T - Minimum 11T
-Fluoric Coated Link Bushings: 4
-Pulley Bearings: - Sealed bearings for the guide, tension, and teeth pulleys
-B-Axle: - Hollow axle
-Di2 Connectivity: - Wired Di2 shifting and firmware update by E-TUBE PROJECT
-Ports and Connectors:
- SD50 port: 1 piece 

Genuine, brand new, boxed Shimano product - Biketart are an official UK Shimano stockist.