ROSE Bikes GRX RD-RX822 GS/SGS Rear Derailleur 12-Speed (for 1 x 12)| Rear Derailleurs

United in Gravel!
With a clear focus on the heart and soul of gravel biking, SHIMANO’s mechanical GRX series now gets a 12-speed update to deliver top performance!
Simplicity and reliability build the basis for the new 12-speed GRX line-up and allow you to enjoy off-road adventures of a special kind!

The GRX RD-RX822 12-speed rear derailleur comes in two versions.
One with a medium shift lever (GS) for cassettes with 11 – 45 teeth and one with a long shift lever (SGS) for cassettes with 11 – 51 teeth.  
All those who continue to push their personal best times, or who fight for victory at the front of the field, will appreciate the narrow gear ratio of the single x 12-speed set-up with a 10 – 45 cassette in combination with a 40 or 42 tooth chainring. This means that the right gearing is available in every riding or racing situation, enabling exactly the right cadence.
For all-day tours – or multi-day adventures – with many climbing sections, the single x 12-speed option with 10 – 51 cassette, in combination with a 40 or 42 tooth chainring, offers a wide gear range. This configuration provides optimal mountain gears for the steepest forest trails or mountain climbs.

As for all GRX rear derailleurs, the clever developers of the Japanese industry giant have used the long proven Shadow RD+ technology from the mountain bike sector for the GRX RX822 rear derailleur, featuring a friction damper that slows down the forward and backward movement of the rear derailleur. This significantly reduces the risk of chain bouncing and jump off and shifting into the wrong gear, while significantly reducing chain noise.
This guarantees silent, smooth, precise and reliable gear changes in challenging terrain. Whether riding off tarmac roads and on dusty gravel roads, going on a bikepacking adventure with lots of luggage or doing classic cyclocross.

Details:
Version for GRX single x 12-speed drivetrains
Shadow RD+ technology (friction damper)
Silent, smooth and reliable shifting on rough terrain
4 PTFE coated pins
Exchangeable and replaceable GS/SGS rear derailleur cage

Technical data (medium shift lever, 10 – 45 cassette):
Intended use: Gravel, Road, Cyclocross
Series: GRX
Model: RD-RX822-GS
Material: aluminium, fibreglass composite, stainless steel, steel
Compatibility: 12-speed (for single x 12-speed)
Largest sprocket max.: 45 teeth
Largest sprocket min.: 45 teeth
Smallest sprocket max.: 10 teeth
Smallest sprocket min.: 10 teeth
Max. front difference: 0 teeth
Total capacity: 35 teeth
Weight: approx. 290 g

Technical data (long shift lever, 10 – 51 cassette):
Intended use: Gravel, Road, Cyclocross
Series: GRX
Model: RD-RX822-SGS
Material: aluminium, fibreglass composite, stainless steel, steel
Compatibility: 12-speed (for single x 12-speed)
Largest sprocket max.: 51 teeth
Largest sprocket min.: 51 teeth
Smallest sprocket max.: 10 teeth
Smallest sprocket min.: 10 teeth
Max. front difference: 0 teeth
Total capacity: 41 teeth
Weight: approx. 288 g

Recommended chain:
SHIMANO 12-speed HG+ (e.g. CN-M8100, prod. code: 2286358)

Recommended cassette:  
SHIMANO DEORE XT CS-M8100 12-speed cassette (prod. code: 2286360)  

In the box:
1 SHIMANO GRX RD-RX822 12-speed rear derailleur
(GS or SGS! Please indicate your choice.)