Thomson X2 Road Stem features a new steer tube clamp assembly that is lighter than the Elite style.31.8 bar clamp diameter with smooth edges for carbon bar compatibleMachined 7000 series extruded bar stockBolts are custom heat treated with corrosion preventative plating149g, 110mm lengthStack height is 36mmUse SM5320 to adapt 1-1/8" threadless stem to 1" threadless steererItem SpecificationsColorBlackWeight149gIntended UseRoadBar Clamp Diameter31.8mmStem Angle100degStem Length110mmSteerer Tube1-1/8" ThreadlessDefined ColorBlackS.H.I.S. Clamp Diameter28.6