Am stem 0deg 35mm all stems are cnc machined from a solid billet of 2014 t6 aluminium the am stem range has been redesigned with more material taken out to save weight and also features a new front plate design opposing steerer clamp bolts remain to give exceptionally rigid steering characteristics optimum machining to give lightest weight without compromising stiffness weight from 134g for 1 18th steerer for use with 35mm handlebars