Controltech vitesse alloy road stemhigh tech aluminum alloy material with stainless steel bolts 17 degree stem is specially made to match for vitesse trial handlebaroutstanding faceplate designsolid and rigid performance features ideal handlebar vitesse angle 17 stack height 40mm steerer 28 6mm handlebar 31 8mm material al 2014 body 6061 clamp bolts stainless steel weight 145gl90mm buy controltech components from chain reaction cycles the worlds largest online bike store