Shipping Estimate
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- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 12 - Jul 17
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Description
GRX RD-RD400 Rear DerailleurThe Shimano GRX RD RX400 10 speed rear derailleur keeps shifting silent and uninterrupted when riding on rough terrain. A Shadow RD+ chain stabilizer prevents chain slapping and drops The gravel tuned clutch tension helps to provide smooth and reliable mixed surface shifting Stabilizer can be turned on off to match terrain Compatible only with 10 speed ST RX400, ST 4700, ST4720, ST 4725, ST RS405 and SL 4700 shift levers Rear Derailleur Mount Type:
The Shimano GRX RD-RX400 10-speed rear derailleur keeps shifting silent and uninterrupted when riding on rough terrain.
- A Shadow RD+ chain stabilizer prevents chain slapping and drops
- The gravel-tuned clutch tension helps to provide smooth and reliable mixed surface shifting
- Stabilizer can be turned on/off to match terrain
- Compatible only with 10-speed ST-RX400, ST-4700, ST4720, ST-4725, ST-RS405 and SL-4700 shift levers
- Rear Derailleur Mount Type: Shimano Rear Direct Mount , 10x1 Standard
- Drivetrain Speeds: 10
- Cage Length: Long
- Chain Wrap Capacity (teeth): 41 teeth
- Largest Cog: 36
- Color: Black
- Weight: 303 g
- Rear Der/Shifter Compatibility: Shimano Road
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1530 reviews
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Product Reviews
★★★★★ 5
Solid choice for fuse holder
Size: 300A Fuse Holder
It’s awesome, solid connections for running 0 gauge wire. No issues after using for months! Might upgrade to using 0 gauge wire ferrules to use with this but for now everything is working well.
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Reviewed in the United States on January 14, 2026
★★★★★ 5
Would buy again
Size: 300A Fuse Holder
Works as described
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Reviewed in the United States on April 13, 2026
★★★★★ 5
I can wire my 0gage wre finally
Size: 300A Fuse Holder
The speed of service and delivery fused at different Amps voltage to purchase appearance is always a great addition and skar audio is always a head of the game I love skar audio I have been running their RP series amps I have all of them except the 4500.1 I bought this for my 07 Wolfsburg jetta with a 15 dual 2ohm down to 1ohm with the RP 3500.1 and it slumps and hits so low the skar box foe my single 15evl series..is tuned to 30htz..n when it hits that level and lower man u know it ..o call it the 23htz (23hurter)..explosive always excellent quality and functionality thanks 😊
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Reviewed in the United States on January 28, 2025
★★★★★ 5
Top notch
Size: 300A Fuse Holder
Very good quality
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Reviewed in the United States on January 8, 2026
★★★★★ 5
It’s good
Size: 300A Fuse Holder
It does it’s job.
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Reviewed in the United States on January 18, 2026