Shimano GRX RDRX400 Shadow+ road and gravel bike rear derailleur

Derived from MTB derailleurs, Shadow RD+ technology has been integrated into the Shimano GRX RD-RX400 derailleur, which is designed for gravel riding; as such, this derailleur offers highly precise gear changes and undeniable smoothness !
The Shadow+ system also features an On/Off lever to easily lock the derailleur cage, a useful option when riding on rough terrain, as it allows better chain tension to prevent unwanted derailments!
This rear derailleur is compatible with Shimano road and MTB cassettes ranging from 11-32 to 11-34.
The Shimano GRX RD-RX400 groupset stands out with its components specifically designed for gravel riding, which, in practice, offer reliable, quiet and stable gear changes.

Technical specifications:

- 10-speed compatible
- Shadow RD+ derailleur cage retention system
- Adjustable chain stabiliser that prevents chain rattling and skipping
- Stabilisation switch can be activated or deactivated depending on the terrain
- Derailleur tension optimised for gravel riding
- Small sprocket: Max. 11T / Min. 11T
- Large sprocket: 36T max./ 32T
- Total capacity: 41T
- Drive type: mechanical
- Shimano part number: IRDRX400
- Brand: Shimano