The campagnolo bora ultra 35 wheelset features cult ceramic bearings which provide extreme smoothness the lowest friction coefficient thanks to oil lubrication and are 9 times more efficient than standard bearings and will spin for up to 47 minutes after being run at 500rpms the campagnolo bora ultra 35 tubular wheelset has taken on a wider rim profile moving from 205 to 242 mm allowing the campagnolo engineers to improve the aerodynamics and house wider tyres the wider tyres increase th