Rock Solid. Burly 31.8 bar-clamp zone is chamfered to reduce stress risers and increase fatigue life in handlebars Iconic hourglass sectional profile provides the immense torsional stiffness CNC weight optimized for 31.8 bars Shot peened and anodized for high strength and low weight Recommended for: ASTM 5, All mountain, enduro, free ride, E-Bike, DJ 31.8mm handlebar clamp 35mm length only