Bora Ultra wheels are the wheels designed for speed par excellence. Perfect aerodynamics and maximum power transmission combined with extraordinary lightness make them the benchmark wheels for leading racing professionals.
The hubs are made from structural carbon of variable thickness, have spherical surfaces, feature Record class components with aluminium axle and a single body for freewheel and pawl carrier. The rear hub features an oversize aluminium flange on the right side which enhances the features of the G3 spoking. Radial spoking and G3 spoking are used on the front and rear wheels respectively. Nominal weight is just 1,305 g. Bora Ultra wheels are fitted with new quick releases with levers in cold-forged aluminium with two pivots for more balanced clamping.

The hubs are made from structural carbon of variable thickness, have spherical surfaces, feature Record class components with aluminium axle and a single body for freewheel and pawl carrier. The rear hub features an oversize aluminium flange on the right side which enhances the features of the G3 spoking. Radial spoking and G3 spoking are used on the front and rear wheels respectively. Nominal weight is just 1,305 g. Bora Ultra wheels are fitted with new quick releases with levers in cold-forged aluminium with two pivots for more balanced clamping.

weight front wheel: 565 g
weight rear wheel: 740 g

Features and Benefits:
Ultralinear geometry: maximum spoke life, rigidity of the structure
Nut-plate system with ball coupling: self-orienting, optimum load distribution
Self-locking nuts: prevention of spoke tension loss
Hollow 50 mm carbon rim: light, aerodynamic, fatigue life
Dynamic balancing: greater stability at high speeds
Carbon hub bodies: maximum weight savings and long fatigue life
Rear hub with oversize right-hand flange: maximum torque transmission
Aluminium right-hand rear flange: rigidity, maximum torque transmission
Cup and cone bearings: low friction, adjustable, easy to maintain
4x15 balls 5/32" in Grade 10 stainless steel: excellent bearing low friction and life
"Ceramic ready" bearings: the Grade 3 ceramic ball bearing kit, available as an optional accessory, can be fitted without modifications
Standardised front-rear bearings: weight savings
Monolithic FW body: weight savings
Oversize light-alloy axles: weight savings and rigidity
Differentiated spokes: optimized weight/performance ratio
Locking with light-alloy lever housing and Symmetric Action light-alloy lever: weight savings, uniform and effective operation
Variable section stainless steel aero spokes: weight savings, aerodynamic
Special brake pads: maximum modulability on dry and wet surfaces

* The nominal weight refers to the lighter specification among the available options. The weight of the hubs does not includes the quick-release.
The nominal weight does not take account of the sometimes considerable quantities of grease used in the assembly of the products.