Nukeproof warhead carbon riser barsmanufactured from a high quality carbon to maximise fatigue resistance nukeproof warhead riser bars deliver buzz taming comfort through the roughest of terrain while still maintaining the strength to absorb the toughest of spills and impactsa 9 back sweep and 6 up sweep ensures optimum ergonomics for long term comfort while for confident handling and precision steering through steep technical switchbacks weve made 780mm our standard width still not sat