Campagnolo Bora Ultra 80 Tubular Wheels Pair The new Bora Ultras with an 80mm rim for tubular tires have been designed & tested in our wind tunnel with the aim of making them as aerodynamic & steady as possible, so that they would be responsive during sudden pace changes & balanced at quicker paces. The new Bora Ultra 80 wheels have a carbon hub & an oversize aluminium flange. Like their 50mm equivalents, they are fitted with the special ball/bearings system with CULT technology, the combination of the best ceramic balls & the special Cronitect steel cup/cone. The CULT allows the wheel to be 9 times smoother compared to the traditional steel ball/bearings system. The balls & bearings are only lubricated with oil instead of grease. The treatment used for the bearings prevents oxidation & maintains performance over time. The new Bora Ultra 80 are also fitted with a dynamic balancing system in the rim: thanks to a special solution applied at the time of manufacturing, the surface of the carbon fibre is positioned in order to achieve a perfect balancing of the rim even at high speed. The design of the spokes has been created with great care to the smallest detail to make the wheel responsive & steady: the front wheel has 16 stainless steel aero-radial spokes with a variable section & the rear wheel is fitted with 18 stainless steel aero-radial spokes with a variable section & doubled on the cassette side. They are both fitted with an antirotation system for the spokes that always keeps them in an optimal position. At just 1540 gr. (715g + 825g) the overall weight of the two wheels is a record. The new Bora Ultra 80 have been designed, both from a technical & graphical point of view, to be integrated with the other 50mm wheels of the Bora range. By combining the 50mm wheel for the front & the 80mm wheel for the rear, produces an amazing weight of just 1390 gr.