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Shimano Ultegra Di2 FD-R8050 Front Derailleur

Mfg PartNum:IFDR8050F
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The Shimano Ultegra Di2 FD-R8050 Front Derailleur benefits from a redesign, bringing with it technology down from their top-of-the-line groupset, Dura Ace. Designed for effortlessly smooth front shifting over the more common wider gear pitches that modern bikes feature, the new Ultegra 8050 Front Derailleur brings in Shimano's Synchronized and Semi-Synchronized Shift, allowing for the optimal gearing at all times. With the Synchronized Shifting enabled, the front derailleur will automatically shift when the rear derailleur is shifted, while Semi-Synchronized Shifting works the other way, shifting the rear derailleur whenever the front is shifter. All the while, the new Di2's auto-trim feature ensures the front derailleur is always centered above the chain, avoiding chain rub through the entire range of gears.

The Shimano Ultegra Di2 FD-R8050 Front Derailleur is compatible with double cranksets on Braze-on frames. Clamp adaptors are sold separately.


  • Redesigned Di2 fits wider gear pitch without sacrificing shifting performance.
  • Synchronized Shift and Semi-Synchronized Shift ensure optimal gear positioning.
  • Auto-trim feature keeps derailleur centered over the chain through entire range of cassette.
  • Claimed weight: 132 grams.
Ordered by Most Relevant First
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Reviewed 3/1/2019
by Anonymous
Competitive Racer
Value Rating
Overall Rating
An excellent experience

This is the first Di2 bike I have built up. BTD is a great place to get top quality products from. I highly recommend them.

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Reviewed 6/29/2018
by Brian
Overall Rating
Whats not to like?

Exceptionally crisp shifting. Easy to adjust. It does exactly what you want electronic shifting to do. The elimination of the low limit screw means you use shift mode for small ring adjustments.

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