TruVativ Atmos Carbon Flat Handlebar - 760mm Wide 31.8mm Clamp 0mm Rise Natural Carbon A1TruVativ Atmos Carbon Flat Handlebar 760mm Wide 31. 8mm Clamp 0mm Rise Natural Carbon A1. The TruVativ ATMOS Carbon Handlebar is a premium bar designed for cross country performance with a 760mm width and a 9 backsweep. The bar can be trimmed by up to 40mm per side allowing you to customize the bar to your preferred width. 760mm wide to start and trimmable by 40mm each side Specialty tuned carbon laminate to absorb noise while maintaining stiffness