Thomson elite x4 15 mtb stemthomson x4 one point five stems feature custom heat treated bolts with corrosion preventative plating featuresmachined 7000 series extruded bar stock with new steerer clamp assembly custom heat treated bolts with corrosion preventative plating 31 8mm bar clamp with smooth edges for carbon bars 15 steerer 41mm heightstem length 45mmstem angle 0 degbar clamp diameter 31 8mmsteerer tube 15intended use mountainweight 169gbuy thomson components from chain rea