Spank spike 800 race riser barspanks new dual xgt bars are designed using proprietary tooling which is specific to conical diameter rise and angle cnc bent on three planes dual xgt technology enables extreme precision where bars would otherwise need to be hand ground resulting in imperfections and inconsistency in wall thickness due to the ever increasing demand for wider and lighter bars and more aggressive riding styles spank has developed the dual extreme gradual taper with impact end