Shimano Ultegra SL Clamp-On Front Derailleur (Triple Chainring)
Details
If you're looking for a quick-shifting triple front derailleur, you've found it in Shimano's Ultegra SL. The wide pivot-link design suppresses flex for light, fast and precise shifts, even under load. And this fine derailleur is built tough for reliability and durability, too.
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: 52/39/30 chainrings: 52 - 30 = 22-tooth capacity.