Shimano ST-R7170 105 Di2 Hydraulic Disc STI Shifter / Brake Set Select Option:Pair moves the rear derailleur and

moves the rear derailleur and makes chain shift up by one sprocket from right to left

Designed with a classic

Measured C-C

worn alone on winter trail runs

Zip: #8 YKK zipper

Shimano ST-R7170 105 Di2 Hydraulic Disc STI Shifter / Brake Set Select Option:Pair moves the rear derailleur andShimano ST R7170 105 Di2 Hydraulic Disc STI Shifter Brake Set Shimanos latest electronic Di2 105 shifters communicate wirelessly with the frames derailleur and battery system, making fitting easier and the front end cleaner. Although the levers are in exactly the same place as with the mechanical STI units, all that is needed to switch chainrings is a light press on the lever for an instant change. When a different sprocket is selected at the rear,