Shimano 105 Clamp-On Front Derailleur
Details
Shimano's 105 Clamp-On Front Derailleur sports extra-wide beefy pivots, which eliminate flex for lightning-quick shifts. Plus, the clear-coated aluminum body and chrome-plated-steel cage will last for years.
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: 52/42/30 chainrings: 52 - 30 = 22-tooth capacity.