Shimano dura ace r9100 11sp braze on front mechupdated and resized to bring you even cleaner and faster gear shifts, the world tour proven dura ace r9100 front derailleur is better than ever'. '.strtoupper('n')ow smaller to provide enhanced tyre clearance, its ideal for use on modern road bikes which are moving towards wider wheel and tyre systems'. '.strtoupper('a')n additional modern feature is the revised cable tension adjustment, which is now done on the mechanism itself, removing the need for frame mounted adjusters.features speed 2x11 speed mount type braze on compatibility all shimano road 2x11 speed mechanical drivetrains top gear teeth 46 55t chainstay angle 61 66deg chain line 43.5mm lighter and intuitive shifting operation natural front shift lever stroke more ergonomic power curve precise and easy front derailleur set up more cable routing options integrated cable tension adjustment new link toggle construction means there is no need for tl fd90 and turning converter assembling adjustable cable tension on the front derailleur adapted for race specific frame design manufacturer's part number fd r9100 f weight 70ga 2 year warranty is offered with all shimano products from chain reaction cycles 3 years on dura ace and xtr products.buy shimano components from chain reaction cycles, the world's largest online bike store.