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Ultegra RD-R8150 Di2 Rear Derailleur

Ultegra RD-R8150 Di2 Rear Derailleur

Out of Stock

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Why We Like The Ultegra RD-R8150 Di2 Rear Derailleur

Shimano Di2 got better, and faster, with the Shimano Ultegra RD-R8150 Di2 Rear Derailleur. We notice the smooth and quick shifting up our 12-gears of range no matter what conditions exist. The derailleur works with up to a 34t cassette that allows for plenty of low gearing range for the biggest climbs in our backyards.


  • Electronic shifting for Shimano 12-speed drivetrains
  • Rear derailleur works with up to 34t cassettes
  • LED indicator for pairing and battery life
  • Shimano claims derailleur shifts 58% faster than previous generation
  • Works with Shimano Di2 shifters
  • Item #SHIU1F8
Cassette Range
[max] 34t
Shimano Di2 drivetrains
Claimed Weight
Manufacturer Warranty
2 years
cycling, road, gravel, commuting, time trial, triathalon

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