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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.
| Model Part Number | RD-RX400 |
|---|---|
| Brand | SHIMANO |
Shadow Plus technology incorporates a chain stabilizing switch that reduces chain bounce, chain slap, and maintains a more stable drive and shifting.
It is designed for use with 10-speed HG chains.
The RD-RX400 supports cassettes up to 11-36T.
This derailleur is designed for double chainset setups.
Lubricate the derailleur and chain regularly, typically every 100-200 miles or more frequently in wet or dusty conditions.
Inspect the derailleur for damage and replace it if necessary. Check the derailleur hanger for alignment.
Check cable tension and adjust barrel adjuster. Ensure the derailleur hanger is straight and aligned.
Check the limit screws and adjust to prevent overshifting. Inspect the chain and cassette for wear. Ensure the chain is compatible with the derailleur.
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.
Setup:
Compatibility:
Care:
