Shimano m5100 deore 10sp double front derailleur all set for exploring the mtb trails, this 11 speed front mech offers a wide pivot link design for superior torsional rigidity, shifting response and service life. It features a rock solid alloy construction, which makes it ideal at handling all the abuse that comes with blasting across the mountain at speed. Shimano has also equipped this model with a side swing side pull design that decreases problems with tyre clearance and reduces cable friction.features material alloy use mtb speed 11 speedlink design wideswing side swingcable routing side pull cable routingmounting options low clamp, direct mount or e type options available separatelychain guide reinforced steel chain guidechainring compatbility for double 38 tooth max chainringchainline chainline both 48.8 51.8mmsingle or pair singlepart numbers low clamp fdm5100mx4 direct mount fdm5100d4 e type fdm5100e4technologies side swing 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. Wide pivot link wide pivot link design for greater torsional rigidity improves shifting response and service life.buy shimano wheels tyres from chain reaction cycles, the world's largest online bike store.