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Shimano GRX RX812 1x11 speed Rear Derailleur

Shimano GRX RX812 1x11 speed Rear Derailleur
The delivery time for this product is uncertain and longer than 4 months. Reservation is not possible. Our advice is to look for an alternative.

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Shimano Ultegra R8000 11-speed

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Description

Description

With this Shimano GRX RX812 1x11 speed you can ride with a single front chainring and still smoothly crest those hills. This derailleur gives you the possibility to mount an 11/40 or 11/42 cassette. In addition, this derailleur is stable, quiet and shifts quickly and smoothly.

Stable and Smooth thanks to Clutch
This derailleur has a built-in clutch. Because of this clutch, the derailleur will not rattle if you cycle on rough terrain and the chain remains well tensioned. This greatly benefits shifting behaviour and the derailleur also makes little noise while cycling.

Watch out!
This derailleur can only be used with a single front chainring, so you can't use this derailleur with two front chainrings.

Which cassette can this derailleur handle ?

- Long cage (GS): 11/40, 11/42
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Reviews

Reviews

4.8 / 5
Average from 6 reviews
5
5 reviews
4
1 review
3
0 reviews
2
0 reviews
1
0 reviews

Most relevant reviews

5 / 5

excellent upgrade for a 1x road setup

- Darren 21 December 2019

I needed a clutched rear mech that would work with my Tiagra 4700 shifters and this fitted the bill perfectly.

Pros & Cons

clutch
easy setup
smooth shifting
none

5 / 5

Easy to fit and very precise

- Ben 10 December 2019

Great value for money and a great bit of kit for any Gravel Bike.

5 / 5

Great product at the best price!

- Tim 28 August 2019

Finally shimano get on board with a 1x gravel groupset. Lovely mech that worked faultlessly with STI shifters from the start without any bodges or work arounds.

Pros & Cons

Clutch
Looks
STI comparability
Expensive compared to MTB equivalents

5 / 5

Geweldig

- OvdV 26 November 2019

Zeer goede derailleur voor 1 x 11. Robuust en degelijk, snel en soepel schakelend en de clutch zorgt er voor dat de ketting altijd op spanning blijft. Bevalt mij nog beter dan Ultegra of XTR.

4 / 5

Buon deragliatore x gravel

- Giuseppe 4 October 2019


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Compare the products above
Shimano GRX RX812 1x11 speed Shimano Ultegra R8000 11-speed SRAM Force WiFLi 10 Speed SRAM Force 22 WiFli 11-speed
Shimano GRX RX812 1x11 speed Shimano Ultegra R8000 11-speed SRAM Force WiFLi 10 Speed SRAM Force 22 WiFli 11-speed
6 reviews 45 reviews 7 reviews 4 reviews
Type Single
Number of gears 11 speed 11 speed 10 speed 11 speed
Shifting Type Mechanical Mechanical Mechanical Mechanical
Largest cassette sprocket 42T 30T / 34T 32T 32T
Cage Length Long Cage Short Cage / Long Cage / RD-R8000GS Long Cage Medium Cage
Maximum Capacity 31T 35T / 39T 37T 37T
441,10 422,40 516,30 445,80
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