Campagnolo Athena 11 Speed Braze-On Front Derailleur: The new Athena front derailleur is compatible with both standard & Compact cranksets. Thanks to the Ultra-Shift geometry of the cage typical of all the Campagnolo 11x groupsets, the chain can move between the chainrings with lightening speed & precision in any situation, even when "chain crossings" are extreme or under stress. For double standard & CT crankset Max tooth difference 16T Max chainring size 54T Min chainring size 34T Chrome-plated nickel fork Antifriction insert M-brace body Even-O clamp Z-shape lower cage Weight: 92g