The GRX RX717 rear derailleur, paired with a 10-51T 12-speed cassette, gives gravel riders the speed, range, and robustness to pursue any gravel challenge. With built-in Automatic Impact Recovery, an impact-deflecting shape, and solid pulleys, this derailleur stands up to hard impacts and still retains its lightning-quick shifting performance. It also features the same battery featured on GRX RX827, XTR M9250, XT M8250, and DEORE M6250 derailleurs, so you can swap batteries between your mountain and gravel bikes.
Rear speeds: 12
Total capacity: 41T
Low sprocket: Max. - 51T, Min. - 51T
Top sprocket: Max. - 10T, Min. - 10T
Fluoric coated link bushings: 8
Guide pulley bearing: Sealed bearing
Tension pulley bearing: Sealed bearing
Teeth: 13T
Sunken type pulley screw
Di2 shifting
Bluetooth® LE custom (*1)|Adjust mode information
Bluetooth® LE custom (*1)|Di2 battery level
Bluetooth® LE custom (*1)|Gear position
Bluetooth® LE custom (*1)|SHIMANO E-BIKE SYSTEMS data items (*3)
Bluetooth® LE custom (*1)|Compatible with E-TUBE RIDE
Bluetooth® LE custom (*1)|Compatible with E-TUBE PROJECT
ANT private (*2)|Adjust mode information
ANT private (*2)|Di2 battery level
ANT private (*2)|Gear position
ANT private (*2)|SHIMANO E-BIKE SYSTEMS data items (*3)
Firmware update by E-TUBE PROJECT
At the heart of it all is the fully wireless GRX RX717 rear derailleur that pairs seamlessly with a 10-51T 12-speed cassette. It features a wide link structure, durable aluminum skid-plate design, and built-in Automatic Impact Recovery function, which allows the rear derailleur to instantly return to its original position after an impact. This derailleur withstands the rigors of off-road riding while retaining its lightning-quick and ultra-precise shifting performance.
The GRX RX717 rear derailleur also features a slimmer and stronger SHIMANO SHADOW ES design, delivering superb chain stabilization and security. And the new rear derailleur has a protected battery housing that’s neatly tucked out of harm’s way but remains easily accessible for removing the battery to charge. The derailleur uses the same battery as GRX RX827, XTR M9250, DEORE XT M8250, and DEORE M6250, making battery swaps between bikes a breeze.
Like all Shimano electronic Di2 systems, the RX717 derailleur and RX715 DUAL CONTROL lever are compatible with SHIMANO’s easy-to-use E-TUBE application. When paired, it allows you to choose your preferred shifting speed, customize shift buttons, and update rear derailleur firmware.
Bottom line, the GRX RX717 lineup continues SHIMANO’s commitment to making gravel-specific performance more accessible to every rider. By blending more options with SHIMANO’s legendary Di2 electronic shifting technology, these new components deliver a worry-free experience for more gravel riders. So, go ahead, plan your next ride, race, or multi-day adventure—and know that with SHIMANO GRX, you'll get to the finish line, wherever that may be.
