Shimano Ultegra Di2 ST-R8170 12 Speed Shifters Size:Right potentially saving hundreds of dollars

potentially saving hundreds of dollars in drivetrain replacement costs

Wider clearance for modern tires and wheelsets (up to 28c)

Cover : Microfeel

and effectively — without the hassle and mess of removing the chain from the bike

Shimano Ultegra Di2 ST-R8170 12 Speed Shifters Size:Right potentially saving hundreds of dollarsWhen developing the Ultegra R8100 series, Shimano took a holistic, performance oriented approach, because great speed means great responsibility. Faster than ever, the Shimano Ultegra Di2 ST R8170 12 Speed Shifters deliver unparalleled control and comfort anytime, anywhere, whether in an everyman race, on the hunt for a personal best, or on a companionable ride. As with Dura Ace R9200, Hyperglide+ makes its way into Ultegra's components, and its Di2