Durable reliable steering performance for your new custom bike build or refurbished ride the brand x integrated headset features precision acb sealed bearings for weather resistance and silky smooth action the top cap and bearing cover are made from carbon fibre with subtle brand x decals to match seamlessly with your bikes aesthetic the cnc machined 7075 crown race provides a precision interface between your forks and headset for lasting rattle free steering compatible with 1 18 to 15