Shimano GRX Di2 (RD-RX717) rear road derailleur

SHIMANO GRX Di2 rear derailleur RD-RX717-SGS | 1x12-speed

Ever since Shimano launched the GRX, a specific groupset for gravel riders, it has been synonymous with reliability, durability and functionality. After minor optimizations, the Japanese company has made a major leap with this version. Thanks to the 1x12-speed drivetrain, contemporary wireless control and the usual outstanding build quality, there are no limits to your bike dreams and you will have a loyal companion for your adventures.
The RX710 version, just below the 825 top groupset, is in no way inferior. Equipped with slightly cheaper materials and simpler ergonomics, it still impresses with excellent performance.

The advantages of electronic shifting are obvious: at the touch of a button, the chain shifts from one sprocket to another in a fraction of a second, regardless of the situation and without any delays or effort. The first-class GRX Di2 rear derailleur is also synonymous with precision.
The new design allows it to be combined with the 10-51 Hyperglide+ cassette, giving you unprecedented shifting performance with virtually no noise. The further developed Shadow chain stabilization concept, here called Shadow ES, enables a very slim design and prevents uncontrolled chain slap on rough trails.
The developers paid particular attention to robustness.The narrow, wedge-shaped design of the rear derailleur, which offers 23 mm more ground clearance, as well as the smooth and resistant surface, significantly minimizes the risk of direct impacts and allows impacting objects to literally slide off. However, if small rocks or a root get in the way, the cage can move inwards thanks to the automatic impact recovery function and automatically returns to its previous position. This happens so quickly that the biker is unaware of it and can continue at full speed. In addition, the closed pulleys reliably fend off twigs and branches.
The power supply to the rear derailleur is also a small revolution. For the first time, Shimano is using a decentralized battery, which is well protected inside the derailleur and can be easily removed for charging.


Technical data

Material: aluminum, plastic, cage: steel
Version: Di2 wireless, 1x12-speed, long cage
Shifter compatibility: Shimano GRX Di2 STI ST-RX715
Power supply: Shimano BT-DN320 battery
Total capacity: 41 teeth
max. largest sprocket: 51 teeth
min. largest sprocket: 51 teeth
max. smallest sprocket: 10 teeth
min. smallest sprocket: 10 teeth
Color: black


Weight self-weighed: 495g