Description
PRO Tharsis XC Aluminum Stem 31.8mm Clamp 100mm 6 Degree Black brand niner Blue AC1 AL 56cm Bike Blue AC1 AL 56cm Bike 2017 Pulley follow up in certain distance Race endurance for less damage in crash Low profile rear derailleur design Stable shifting performance SHIMANO SHADOW RD construction Adapted for race specific frame design