The new S2 headset has been engineered for the riders toughest on bikes. The perfect addition to your latest bike build. Utilising full stainless steel angular contact bearings with nylon retainers, these headsets are built to last. Angular contact bearings have higher load tolerances, which when in a headset, offer unparralelled performance. With 8 separate lower and 4 separate upper push in options, we have you covered for any eventuality. Features:Precision CNC machined 6061-T6 alloy cups.,Unique MagCap top cap. ,High quality sealed upper bearings with stainless steel inner and outer races, stainless steel ball bearings, and nylon retainers. ,High quality sealed angular contact lower bearings with stainless steel inner and outer races, stainless steel ball bearings, and nylon retainers. ,1.5 lowers include both tapered and 11/8\" adaptor crown races..