Shimano xtr m980 top swing 3x10 front mecha key element in shimanos legendary front shifting performance the latest xtr front derailleur continues to lead the way with flexible mounting options and easy access fasteners features optimized for 423224 10 speed triple top swing linkage with low clamp universal clamp band mounting dual spike technology aluminium outer platespecifications swing action top swing cassette compatibility 10 speed maximum capacity 18t top middle minimum capacity