Full Speed Ahead VAS Stem - 80mm 31.8mm Clamp +/-6 1 1/8" BlackFull Speed Ahead VAS Stem 80mm 31. 8mm Clamp + 6 1 1 8" Black. FSAs new Vibration Absorbing Stem for Gravel application is the first of its kind. Featuring significant vibration damping via 360 degree handlebar isolation. In turn reducing forces and impacts to the riders hands and arms. The result being less arm pump and hand fatigue for a better ride and shorter recovery. Length 80 90 100mm 31. 8mm handlebar clamp diameter 3 Color bushing options