Shimano Dura-Ace Di2 ST-R9170 Shifter Only (Disc Brake) Size:Left Shifter Only All carbon fiber material is

All carbon fiber material is produced by Toray and uses tailor made nano Epoxy Resin for very high impact resistance

) in PF30 (46mm ID BB shell) frames without the need for any adapters

The clamping area is 50mm

from geometry to paint job

The collar utilizes the Thomson Seatpost bolt

Shimano Dura-Ace Di2 ST-R9170 Shifter Only (Disc Brake) Size:Left Shifter Only All carbon fiber material isWith 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)