Side swing side pull SLX double front derailleur decrease problems with tyre clearance & reduces cable friction E-type frame fit for easy & accurate installation giving perfect alignment Designed specifically with modern trail bikes in mind Shimano side swing technology front derailleurs increases tyre clearance by 15mm while new cable routing resulting in the lightest shifting action yet Side pull cable routing Dyna-Sys 11 11-speed MTB drivetrain compatibility Specifically developed for 68 73 mm & press fit 92 bottom bracket shells with a 48.8 mm chain line 34-38 tooth outer ring compatible For 66-69 degree chainstay angle