Shimano ST-R7170 105 Di2 Hydraulic Disc STI Shifter / Brake Set Mount Type_Direct Rails: Steel (7mm)

Rails: Steel (7mm)

Toe ends rubberised and reinforced

and let the M2’s electromagnetic response system do the rest

For those shorter

increases bump-sensitivity and traction

Shimano ST-R7170 105 Di2 Hydraulic Disc STI Shifter / Brake Set Mount Type_Direct Rails: Steel (7mm)Shimano 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,