GRX 2x10 mechanical rear mech
Shimano GRX RD-RX400 10-Speed Rear Derailleur
The entry-level 10-speed GRX rear mech for 2x gravel bikes, taking 11-32T to 11-36T cassettes. It brings the switchable Shadow RD+ clutch to more affordable builds.
Highlights
Why we rate it
Clutch at a lower price
Shadow RD+ keeps the chain quiet on rough tracks, with an on-off switch.
Wide 10-speed range
Handles 11-32T up to 11-36T cassettes.
Road-lever compatible
Works with Shimano 10-speed road dual control levers, including GRX RX400.
Hard-wearing build
Cold-forged construction for dependable everyday use.
Tech specs
Specification
Manufacturer specification. Details may change without notice.
Specification
- Model code
- RD-RX400
- Speeds
- 10
- Actuation
- Mechanical (cable)
- Drivetrain
- 2x
- Max low sprocket
- 36T
- Min low sprocket
- 32T
- Top sprocket
- 11T
- Total capacity
- 41T
- Max chainring difference
- 16T
- Weight
- 303g (claimed)
Ordering
Available from The Cycle Collective
Available to order through The Cycle Collective in Dorking. For availability, setup or advice, call 0203 148 6764 or email hello@thecyclecollective.cc.