Shimano GRX Shadow Plus RD-RX812 11-speed Rear Derailleur
IRDRX812
With the GRX RD-RX812 rear derailleur by Shimano you can shift reliably off-road
With the Shimano GRX RD-RX812 rear derailleur you can shift smoothly and quietly on rough terrain. An adjustable chain stabilizer and the Shimano Shadow RD+ technology counteract chain slapping and dropping. Use this rear derailleur when riding an 11-40 or 11-42 cassette.
Specifications:
- Series:
- GRX RX810
- Application:
- Gravel, Cyclocross, City & Touring
- Gearing:
- 11-speed
- Mount:
- standard (Direct Mount compatible)
- Capacity:
- 31-tooth
- Compatibility:
- Shimano Road 11-speed
- Compatibility - Chains:
- HG-EV 11-speed, HG-X11
Technical Information:
- Derailleur Pulleys:
- 11-tooth
- Outer Cage Material:
- Aluminium
- Inner Cage Material:
- Aluminium
- Other Materials:
- aluminium, composite material (GFRP), steel, stainless steel
Compatibility:
1x11-speed:- Shift/Brake Lever:
- ST-RX810, ST-RX600
- Cassette:
- CS-M8000-11, CS-M7000-11, CS-M5100-11
- Chain:
- CN-9000, CN-6800, CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500
Features:
- adjustable chain stabilization prevents chain drops
- stabilizer with on/off switch to adapt to the terrain
- tension adapted to gravel
- silent and continuous rear derailleur on uneven terrain
- smooth and reliable shifting on mixed terrain
- painted cage plates
- derailleur pulley bearings
- 4 pivot bushings, fluorine-coated
Technology:
Shadow RD+Shadow Plus rear derailleurs are just as low-profile as Shimano's Shadow rear derailleurs. In addition, a stabilizer with on/off switch is used to reduce chain slap and thus counteract chain drop. At the same time, this results in a quieter drive. Weight is also saved compared to other chain restraint devices.
OT-RS900
For Dura-Ace RD-R9100, Ultegra RD-R8000, 105 RD-R7000 and other 11-speed road or gravel rear derailleurs, Shimano has developed the special OT-RS900 cable housing. It is less stiff than the conventional OT-SP41 housing and is therefore better suited to the tight curve where the cable is routed from the frame to the rear derailleur. Thanks to OT-RS900, problems with the barrel adjuster can be prevented and the rear wheel can be removed more easily. OT-RS900 is not intended for use on the shift/brake lever side.
Models:
long:- Max. Largest Sprocket Teeth:
- 42-tooth
- Min. Largest Sprocket Teeth:
- 40-tooth
- Max. Smallest Sprocket Teeth:
- 11-tooth
- Min. Smallest Sprocket Teeth:
- 11-tooth
- Max. Chainring Difference:
- 0-tooth
- Total Capacity:
- 31-tooth
- Manufacturer Number:
- I-RDRX812
Contents:
- 1 x Shimano GRX RD-RX812 rear derailleur
- 1 x Shimano OT-RS900 240 mm cable housing
- 1 x long nose end cap
Weight:
- black/long: 267 g
