When 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 parts rely on wireless technology to simplify operation and ensure smooth shifting.

Specifications
Housing, button: carbon fiber reinforced polymer (CFRP, painted)
Brake lever: aluminium (painted)
Compatibility - Additional shifter: SW-RS801
Front derailleur: FD-R9250, FD-R8150
Rear derailleur: RD-R9250, RD-R8150
Sub brake lever: BL-RX812
Brake caliper: BR-R9270, BR-R8170
Brake hose: SM-BH90-J-SSR, SM-BH90-JK-SSR

Mfr Claimed Weight
391g

Get wireless precision shifting with the Shimano Ultegra Di2 ST-R8170 Shifters, in stock at CCACHE.