Shimano Ultegra ST-R8170 for Di2 Shift / Hydraulic Disc Brake - 12-speed - Left Hand Lever Only Speed:12 Speed

Shimano Ultegra ST-R8170 for Di2 Shift / Hydraulic Disc Brake - 12-speed - Left Hand Lever Only Speed:12 SpeedThe redesigned Shimano Ultegra Di2 ST R8170 levers feature new ergonomics and even more precise brake modulation thanks to SHIMANO's proven SERVO WAVE technology. Wireless electronic shifting provides even more control. OVERVIEW THE SCIENCE OF SPEED: Shimano Ultegra Di2 2 speed STI Dual Control ST R8170 L Great speed means great responsibility. That's why, faced with the task of making the new ULTEGRA groupset even faster, Shimano decided to take a

WEIGHT: 28g w/o AirTag

better retention and the ability to mount a Garmin computer above the bottle

Vectran Breaker - The reference in puncture protection

The Black Inc Shimano Cassette Body has been engineered to provide low friction and quick engagement in order to make the most out of the aero efficiency of our wheels

Hex alloy endcap for enhanced durability

The Coated version has a metallic coating laid onto the races

High quality tire plugs aggressively seal holes that are too large to be sealed by sealant alone (hole size varies from tire to tire)

a polyurethane-laminated mesh upper for ventilation and support

riding will feel almost effortless

on the bike

Available in 165

and cyclocross