Shimano Dura-Ace Di2 ST-R9170 Shifter Only (Disc Brake) BPW or larger tool kit

or larger tool kit

Tubular (or inserted into latex/butyl inner tube): up to 1 year

one of science's most accurate and innovative projects to detect subatomic particles moving at the speed of light

With this adaptor piece

KMC’s latest breakthrough in chain technology

Shimano Dura-Ace Di2 ST-R9170 Shifter Only (Disc Brake) BPW or larger tool kitWith a compact overall shape, the DURA ACE R9170 levers bring both SHIMANO's praised hydraulic disc brake technology and the category leading DI2 electronic shifting in a package ready for the most demanding of race situations. An updated button feel and layout ensure precise shifting while enhanced ergonomics guarantee comfort, allowing you to concentrate on the effort at hand. Specifications Left or Right Di2 Shifter (Choose from drop down menu)