If you're looking for a quick-shifting super-light front derailleur, you've found it in Shimano's Ultegra Front Derailleur. Its wide pivots provide flex-free action for surefire shifting every time.
Your seat-tube diameter determines the needed derailleur clamp size.
Capacity is calculated by subtracting your smallest chainring's tooth count from the largest chainring's tooth count. Example: 53/39 chainrings: 53 - 39 = 14-tooth capacity.
Weight: 103 grams
|31.8mm clamp w/28.6mm adapter||689228077294||IFD6600BSM||ULT39899298R|