Shimano ST-R8170 STI Shifter Right w/ BR-R8170 Front Calliper 12-Speed Di2 Wheel Tools Wide range and close step

Wide range and close step 12-speed drivetrain

2 sealed bearings with oversized DU bushing design is robust and reliable (same internals as Compound and Black Kat pedals)

Mix of Lanolin

Open channeling for optimized mud and snow shedding capabilities

moisturewicking fabric

Shimano ST-R8170 STI Shifter Right w/ BR-R8170 Front Calliper 12-Speed Di2 Wheel Tools Wide range and close stepDURA ACE shared DNA The new R8100 series is designed for those seeking their next competitive advantage. Sharing the same DNA offering the same incredible performance of the R9200 series across all functions, empowering the rider to take their ride to the next level. Wireless Simplicity The revised Di2 platform featured on the DURA ACE series is now standard with the ULTEGRA R8100 series. Making the shifter derailleur system completely wireless,