Shimano Dura-Ace 7800 front derailleur

These derailleurs are a bit of favourite amongst weight weenies wanting to save some weight over the XTR or XX offerings. With careful adjustment they will work on triple ring front cranks and even handle an 11-34 rear cassette spread with minimal rubbing and front shifting performance comparable to offroad front derailleurs.

72g for this braze-on version:

72g Dura Ace 7800 front derailleur

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