Key Features:Wide link design Dyna-Sys 10-speed Deore MTB front derailleur,Side swing, side pull front derailleur decrease problems with tyre clearance and reduces cable friction,Designed specifically with modern trail bikes in mind, Shimano side swing technology front derailleurs increases tyre clearance, while cable routing resulting in the lightest shifting action yet,Side pull cable routing,Wide pivot link design for greater torsional rigidity improves shifting response and service life,Direct frame fit for easy and accurate installation giving perfect alignment,Dyna-Sys 10-speed MTB drivetrain compatibility,Reinforced steel chain guide offers high strength and rigidity for improved shifting response,For triple 40-42 tooth chainring,For 66-69 degree chainstay angle.