-Wide link design Dyna-Sys 10-speed Deore MTB front derailleur side swing, side pull front derailleur decrease problems with tyre clearance & reduces cable friction. Designed specifically with modern trail bikes in mind, 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 & service life. Direct frame fit for easy & accurate installation giving perfect alignment. Reinforced steel chain guide offers high strength & rigidity for enhanced shifting response.