Thomson X4 Mountain Stems feature smooth edges for carbon bar compatibility and use bolts that are custom heat treated with corrosion preventative plating.
Bolts are custom heat treated with corrosion preventative plating
Stack height is 41mm
31.8 bar clamp diameter with smooth edges for carbon bar compatibility
Machined 7000 series extruded bar stock
Adaptor available to adapt 1-1/8" threadless stem to 1" threadless steerer