Shimano GRX RX400 Front Derailleur
Best gravel-specific shifting upgrade for dedicated off-road cyclists.
This derailleur brings dedicated gravel geometry to your drivetrain, ensuring crisp, reliable shifts when the terrain gets unpredictable. It lacks the flash of high-end racing components, but it trades that vanity for the rugged, consistent performance required for long days on loose surfaces.
$43.00
at
Bicycle Addiction
Who it's for
- Gravel riders needing clearance for wider tires and rough terrain
- Cyclists prioritizing consistent shifting performance in muddy conditions
- Mechanics seeking easier cable installation and lighter lever action
Who should skip it
- Weight-conscious riders chasing the lightest possible gravel build
- Upgraders planning a future move to 11-speed drivetrains
- Owners of frames lacking a dedicated braze-on mounting tab
Performance breakdown
Shift Precision
Crisp, accurate gear changes even under heavy pedaling loads.
Terrain Adaptability
Maintains consistent chain tension across rough, unpredictable gravel surfaces.
Installation Ease
Braze-on mounting allows for straightforward setup and precise alignment.
Build Durability
Robust construction withstands grit, mud, and long-term trail abuse.
Ecosystem Integration
Seamlessly pairs with the wider GRX drivetrain for fluid performance.
Chain Management
Effectively prevents dropped chains during aggressive off-road riding.
Key Specs
Derailleur Position
Front
Speed Compatibility
10-speed
Mount Type
Braze-on
Shifting Type
Mechanical
Total Capacity
16 teeth
Maximum Chainring Size
46 teeth
Front Chainring Compatibility
Double
Cable Routing
Bottom Pull
Intended Use
Gravel
Chainline Offset
+2.5 mm
Know before you buy
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