Shimano GRX RD-RX400 10 Speed Rear Derailleur Shadow+ for Double

Customer Reviews (1)
5 / 5| Write your review
£64.99 Please note this product has selling restrictions to your country. was
Manufacturer : 
SJS Cycles part number : 
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- Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world
- Low profile Shadow Plus design 10-speed rear derailleur for fast and precise shifting performance
- Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
- Compatible with 10-speed HG chains
- Wide gear ratio compatible with 11-32T up to 11-36T
- For use with double chainset
- Weight: 303g
Product Reviews (1)
Questions & Answers (4) Q & A
Product Reviews (1)
Overall Product Rating 5 / 5
Just the job !!
By Gary
17 Oct 2022
5 / 5
I recommend this product
ProsFantastic Group set for hills ,
Bought to replace the shimano claris group set on my trek domane with full 10 speed grx , perfect for the hills where I live with some gravel thrown in , now have 46/30 front 36 rear , also work perfect with tiagra 4700 mechanical road levers , don't buy grx if you need top end speed , this is built for off road/climbing.
Questions & Answers (4)
What 10 speed road shifters will work with this mech?
07 Dec 2020
GRX 10-speed levers- such as the ST-RX400-L and ST-RX400-R.

JK 07.12.20
Can I use this GRX mech with new Shimano Tiagra 4700 2x10 Speed STI Shifter?
07 Dec 2020
We are unable to confirm this, as we have not yet tested 4700 levers with this mech.

JK 07.12.20
Can I use this with a triple chainset (ultegra 6603) and triple levers (5703)?
26 Jan 2020
Hi, no this is for GRX double chainsets and shifters. It will also work with Shimano 4700 series. Thanks 29/01/2020
Compatible withy my Ultegra 6600 10 speed shifter?
06 Sep 2019
Unfortunately these work with current 10 speed Shimano, 4700 or GRX.

Thanks - 06/09/19