GRX RD-RD400 Rear Derailleur
Shimano

GRX RD-RD400 Rear Derailleur

IRDRX400

$60.99 $45.74 Save 25%
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Free shipping on all orders over $49. $9 shipping for orders under $49.

Cannondale, Santa Cruz, Cervelo, Gazelle, BMC, and *other bikes ship for FREE, but Gold Label Assembly will be added at checkout for only $79 (reg. $100) to cover the professional bike build and re-packaging by our certified technicians. It’s bike shop quality, direct to your door!

Some bikes not eligible for shipping due to manufacturer restrictions.

Shop with confidence! It's important to us that you are happy with your Mike’s Bikes purchase so we offer offer a 30-day return/exchange window for your unused gear and 14 days on all bikes. Our exchange and return process is fast and easy. If you choose to exchange for a different size or color, we will ship your product for free.

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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

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