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  • Shimano Ultegra R8150 Di2 Rear Derailleur 12spd Medium Cage

Shimano Ultegra R8150 Di2 Rear Derailleur 12spd Medium Cage

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Shimano Ultegra RD-R8150 Di2 Rear Derailleur - 12-Speed, Medium Cage, Black

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Shimano’s latest and greatest Ultegra 12-speed Di2 drivetrain delivers next generation shifting and overall performance. Every aspect of the new drivetrain is a substantial step up from the previous generation, with even the rear derailleur seeing improvements. The Ultegra R8150 Di2 rear derailleur features ridiculously fast shifting with the derailleur being a whopping 58% faster than the previous generation Dura-Ace. This massive jump in shifting speed gives you the competitive edge when it’s time to sprint for the finish. Compatibility has been expanded upon with just the single cage length being able to cover 28-34t low sprockets, ensuring compatibility with your favorite gearing setup.


  • 58% faster shifting than the previous generation Dura-Ace
  • Compatible with 28-34t low sprockets for maximum gearing range and compatibility
  • Shadow RD keeps the drivetrain quiet and shifting consistent
  • Integrated wireless unit, charger, and switch for a simple and clean system design
  • Weight: 262g
  • Drivetrain speed: 12
  • Min sprocket: 11t, Max sprocket: 34t
  • Pulley teeth: 11t
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