Shimano grx 815 di2 11sp gravel front derailleurthis 11 speed front mech is specifically designed for dominating on your gravel bike with the help of electronic technologies keeping you in control'. '.strtoupper('f')eaturing a chainline that's 2.5mm wider than conventional road front mechs, the rx815 offers wider tyre clearance'. '.strtoupper('y')ou'll benefit from smooth and precise shifts with its 17t front range giving you a wider front gearing experience'. '.strtoupper('p')art of shimano's exclusive series that's developed for riding over rough roads, gravel and mud, this tough component is reliable and high efficient'. '.strtoupper('f')ast shifting front mechfully equipped with shimano's revolutionary di2 shifting system, this derailleur solves the challenges most mechanical drivetrains are faced with by giving you instant, accurate and lightning fast shifts'. '.strtoupper('a')t the push of a button, you'll benefit from precise gear changes even when it's under a heavy load while climbing or accelerating'. '.strtoupper('w')hether you're exploring or riding after work with friends, this is the ultimate choice of upgrade for riders who want to remain in complete control.features  use gravel, road  wider tyre clearance  wider front gearing range  17t front range  chainline 2.5 mm vs conventional road front derailleurtechnologies  digital integrated intelligence the revolutionary di2 shifting system solves the challenges drivetrains present to the power delivery equation in cycling'. '.strtoupper('d')i2 gives you instant, accurate, lighting fast shifts the first and every time, at the push of a button'. '.strtoupper('e')ven in the most extreme conditions, shifting is precise and controlled'. '.strtoupper('y')ou can change gear even under heavy load while climbing or accelerating'. '.strtoupper('w')ith di2, you are in complete control.  e tube  the e tube platform's “plug play” and d fly wireless connections make it easier than ever to check the system's status, and apply customized settings to di2 and shimano steps components with a pc, tablet or smart phone.  shimano electronic intelligent system the seis innovative shift technology is still based on the shimano index system that has proved its superior gear changing characteristics over the years'. '.strtoupper('t')he big difference is that in this case, the shifting action is provided for by electronics instead of mechanics'. '.strtoupper('a') 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.