Shimano GRX Shadow Plus RD-RX812 11-speed Rear Derailleur - black/long

Shimano GRX Shadow Plus RD-RX812 11-speed Rear Derailleur

Item number: 71457
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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.


Are you interested in the GRX series? Then have a look at our Shimano gravel site. You will find many more products there.

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 stabilisation 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, Ultegra, 105, GRX and other 11-speed or 12-speed road and 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
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.89 / 5.00

Models:

  • black/long, in stock
    81.35€

Customer Reviews (4)

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Customer Reviews (4)

5.0/5.0
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Give us your opinion on this product.

by manuel S. on 20.04.2023
verified purchase
item: black/long

magnifico

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by Röther M. on 05.03.2023
verified purchase
item: black/long

Macht alles, wie man es von Shimano gewöhnt ist.

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by Jan M. on 20.05.2022
verified purchase
item: black/long
1 of 1 customers found this review helpful.

Schaltet bei mit (illegalerweise) mit längeren Kettenleitblechen für mehr Kapazität und funktioniert trotzdem gut.
Der Dämpfer verschlechtert das schalten leicht, ich weiß nicht ob das so üblich ist bei solchen Schaltwerken

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by Olaf H. on 20.08.2019
verified purchase
item: black/long
9 of 9 customers found this review helpful.

Hochwertig, leicht einzustellen, kompatibel auch zu 105- oder -Ultegra-STIs, präzise Schaltvorgänge. RD-RX812 funktioniert auch mit Kassetten mit 11-46 Zähnen (bei 1x11, bei 2x11 muss der Schaltkäfig verlängert/ausgetauscht werden).

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