Shimano GRX RD-RX815 Di2 11 Speed Rear Derailleur For Double
402918

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Shimano GRX RD-RX815 Di2 11 Speed Rear Derailleur For Double
402918

£284.99 £244.87 save £40.12
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Clearpay now available. Buy now. Pay in 4.
Save up to £115.09 with Cycle2work
  • Adjustable chain stabilizer for improved chain security
  • Switch stabilizer ON/OFF to match the terrain
  • Di2 electronic shifting for superior gear changing

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Shimano GRX RD-RX815 Di2 11 Speed Rear Derailleur For Double
Shimano GRX RD-RX815 Di2 11 Speed Rear Derailleur For Double
£284.99 £244.87 save £40.12
Intervening prices may have been charged

Shimano GRX RD-RX815 Di2 11 Speed Rear Derailleur For Double

  • Shimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world
  • Low profile Shadow Plus design 11-speed rear derailleur with Di2 technology for fast and precise shifting performance
  • Shadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting
  • High tolerance cold forged aluminium link plates and body construction is extremely light and durable
  • 11-speed E-tube Di2 compatible
  • Compatible with 11-speed HG chains
  • Wide gear ratio compatible up to 11-34T
  • For use with double chainset
  • Weight: 287g

With an integrated chain stabilizer mechanism, the Shimano GRX Derailleur provides a quieter experience and shifting security and precision on mixed terrain. For rides on smooth surfaces, the derailleur features and ON/OFF switch for the chain tensioner. The RD-RX815 DI2 version offers the digital precision of Shimano electronic shifting and synchronized shifting and is compatible with road cassettes with a 34T low sprocket max. 

Technical specifications:

  • Speeds: 11-speed
  • Shifting: Di2 E-tube electronic shifting
  • Colour: Black
  • Max tooth: 34T
  • Total capacity: 38T
  • Weight: 287g
  • Model number: RD-RX815

Compatibility:
The GRX RD-RX815 rear derailleur is compatible with all 11-speed Di2 shifters including the below:

  • Dura Ace ST-R9150
  • Dura Ace ST-R9160
  • Dura Ace ST-R9170
  • Dura Ace ST-R9180
  • Dura Ace ST-9070
  • Dura Ace ST-9071
  • Ultegra ST-R8050
  • Ultegra ST-R8060
  • Ultegra ST-R8070 
  • Ultegra ST-6870
  • Ultegra ST-6871
  • GRX ST-RX815
  • Shimano ST-R785