• Shimano Dura-Ace Di2 R9150 Rear Derailleur

        • $659.99 659.99
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      Short Cage

Shimano Dura-Ace Di2 R9150 Rear Derailleur

The Dura-Ace R9150 rear derailleur takes Shadow technology from Shimano’s MTB range and introduces it to the road. The shadow design places the rear derailleur under the chainstay and cassette to give a slimmer profile, which not only improves aerodynamics but helps prevent damage in a crash.

The Shadow design offers faster wheel changes thanks to the fact that it moves the derailleur out of the way of the dropouts. It also offers faster and more precise shifting than ever before.

Shimano's 9150 groupset brings their Syncro-Shift technology to the road too. Syncro-Shift technology enables the front derailleur to read the position of the rear derailleur and will automatically operate the front shift to position the gears in the most efficient gear and best chain line so you'll never have to worry about front shifting and correction shifts again.


  • Maximum Sprocket: 30T
  • Minimum Sprocket: 11T
  • Maximum Front Difference: 16T
  • Total Capacity: 35T
  • Ergonomic shifting operation without stress
  • Shimano synchronised shift
  • Low profile rear derailleur design
  • Shimano Shadow RD
  • Race endurance for less damage in crash
  • Maintains compact and smooth appearance
  • Weight: 204g

Buy Shimano Components from Chain Reaction Cycles, the World's Largest Online Bike Store.

  • Delivery costFREE
  • Delivery toUnited States of America
  • 365 Days return or exchange

    If you're not completely satisfied with an item you may return it within 12 months of purchase. We'll give you a full refund if the item hasn't been used or the component hasn’t been fitted.

    More information on returns
  • Pay by Bank Transfer, PayPal or Card


  • Colour: Silver
  • Size: Short Cage
  • Speed: 11 Speed

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