Shimano Shift Switch SW-9160, Dura Ace Di2, Bar End Shifter for TT Handle, Right & Left Bike Accessories Brand_Challenge providing precise and reliable gear

providing precise and reliable gear changes with the push of a button

R5: a combination of a ride compliant carbon reinforced nylon shell and an S-Alloy rail

to work in the harshest environments

Crafted with Pinarello's expertise in carbon fiber construction

Alloy integrated w/ 1 1/8" alloy steerer

Shimano Shift Switch SW-9160, Dura Ace Di2, Bar End Shifter for TT Handle, Right & Left Bike Accessories Brand_Challenge providing precise and reliable gearEasy to push the thumb switch when gripping the top of the TT extension. AVERAGE WEIGHT 31g SERIES Dura Ace Di2 GENERATION R9160 FRONT SPEEDS N A REAR SPEEDS N A ST SL SW SHIFTER TYPE Aero Bar Shifter