With the Shimano GRX RD-RX812 rear derailleur, you can shift gears smoothly and quietly on rough terrain. An adjustable chain stabilizer, the Shimano Shadow RD + technology, counteracts chain slapping. The optimal choice if you drive an 11-40 or 11-42 cassette.

Technical:
- Application: gravel, cyclocross, touring / trekking
- Switching levels: 11-fold
- Mounting: Standard (Direct Mount compatible)
- Capacity: 31 teeth
- Compatibility: Shimano Road 11-speed
- Compatible chain: HG-EV 11-speed, HG-X11
- Outer cage material: aluminum
- Inner cage material: aluminum
- Material of other components: aluminum, plastic (GFRP), steel, stainless steel

Properties:
- for 1x11-speed circuits
- adjustable chain stabilization prevents the chain from jumping out
- Stabilizer with on / off switch to adapt to the terrain
- Tension adapted to gravel
- Silent and continuous rear gear shift on uneven terrain
- Smooth and reliable gear shifting on changing ground conditions
- Painted baffles
- Guide pulley and tension pulley bearings
- 4 joint bushings, fluorine-coated

Scope of delivery:
- 1 x Shimano GRX RD-RX812 rear derailleur
- 1 x Shimano OT-RS900 outer shell, 240 mm
- 1 x extended end cap

(Translated with Google Translate)