Shimano GRX Rear Derailleur - RD-RX400
Best current price£33.99from Amazon
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Amazon£33.99Visit shop Shimano GRX RD-RX400 GRX 10-speed rear derailleur, Shadow+, for double, Black
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AmazonShimano GRX RD-RX400 GRX 10-speed rear derailleur, Shadow+, for double, Black
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£33.99
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Merlin CyclesShimano Black Grx Rx400 Rear Derailleur - 10 Speed - / 10 Speed
Free delivery in 1–3 days
£39.95
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eBayShimano GRX Rear Derailleur Shadow+ RD-RX400 - 2 x 10 Speed
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£49.99
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Shimano GRX Rear Derailleur 10 Speed Shadow+ Double 36T Gravel Mech RX400Free delivery in 1–3 days£50.76Visit shop →
Shimano GRX Rear Derailleur 10 Speed Shadow+ Double 36T Gravel Mech RX400Free delivery in 1–3 days£50.78Visit shop →
Shimano RD-RX400 Rear Derailleur - GRX - 10 Speed - Gravel BikeFree delivery in 1–3 days£54.95Visit shop →
Shimano RD-RX400 GRX Shadow+ 10 Speed Rear DerailleurFree delivery in 1–3 days£58.18Visit shop →
Shimano GRX RX400 Rear Derailleur - 10 SpeedFree delivery in 1–3 days£59.99Visit shop →
Shimano GRX RD-RX400 10s Rear Derailleur Black with chain stabilizer IRDRX400£10.27 delivery£66.50Visit shop →
Shimano GRX RD-RX400 GRX 10-speed rear derailleur, Shadow+ doubleFree delivery in 1–3 days£67.83Visit shop →
Product Information
Full details
This guide is for cyclists looking to upgrade their gravel or adventure bike's shifting performance. The Shimano GRX RD-RX400 rear derailleur offers precise and reliable shifting with a focus on stability and durability in challenging terrain. While it's designed for 10-speed systems, compatibility is key: ensure your existing components match the specifications.
All features
| Model Part Number | RD-RX400 |
|---|---|
| Brand | SHIMANO |
Extended Product Information
FAQs
What is Shadow Plus technology?
Shadow Plus technology incorporates a chain stabilizing switch that reduces chain bounce, chain slap, and maintains a more stable drive and shifting.
What type of chains does the RD-RX400 use?
It is designed for use with 10-speed HG chains.
What is the maximum cassette size the RD-RX400 can accommodate?
The RD-RX400 supports cassettes up to 11-36T.
Can I use this derailleur with a single chainring setup?
This derailleur is designed for double chainset setups.
How often should I lubricate the derailleur?
Lubricate the derailleur and chain regularly, typically every 100-200 miles or more frequently in wet or dusty conditions.
What should I do if the derailleur gets damaged?
Inspect the derailleur for damage and replace it if necessary. Check the derailleur hanger for alignment.
Troubleshooting
Shifting is slow or inaccurate.
Check cable tension and adjust barrel adjuster. Ensure the derailleur hanger is straight and aligned.
Chain is skipping or not shifting to all gears.
Check the limit screws and adjust to prevent overshifting. Inspect the chain and cassette for wear. Ensure the chain is compatible with the derailleur.
Chain is noisy or bouncing excessively.
Check the chain tension and ensure it is properly lubricated. Inspect the chain for wear and replace if necessary. Make sure the Shadow Plus switch is engaged.
Pros and Cons
Pros
- Improved chain stability on rough terrain
- Reliable and precise shifting performance
- Wide gear range compatibility
- Durable construction for gravel riding
- Specifically designed for gravel-focused ergonomics
Cons
- Limited to 10-speed drivetrains
- Requires compatibility with HG chains
- May require adjustment with different cassettes
- Not compatible with 11-speed or higher systems
Setup, Compatibility & Care
Setup:
- Install the derailleur on the frame, ensuring proper alignment with the hanger.
- Attach the HG chain to the cassette and chainrings.
- Adjust the limit screws (high and low) to prevent the chain from overshifting.
- Fine-tune the cable tension for optimal shifting performance.
Compatibility:
- Compatible with 10-speed HG cassettes and chains.
- Designed for double chainset setups.
- Ensure your shifters are compatible with 10-speed rear derailleurs.
Care:
- Regularly clean the derailleur with a degreaser and a clean cloth.
- Lubricate the pivots and chain with bicycle-specific lubricant.
- Check for wear on the pulleys and chain and replace as needed.