Shimano Ultegra Di2 ST-R8170 12 Speed Shifters Size:Right and effectively — without the

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

Compound: ADDIX

secure 1x Ekar system – perfect for gravel riding and racing

potentially saving hundreds of dollars in drivetrain replacement costs

SIL-TEC treated surfaces for smoother running and increased durability

Shimano Ultegra Di2 ST-R8170 12 Speed Shifters Size:Right and effectively — without theWhen 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