Campagnolo Bora WTO 45 2-Way Tubeless Clincher Rear Wheel

The Bora wheelset has been pushing the limits of long lasting, reliable and race-winning performance since its introduction in 1998. Through its long and prestigious history the Bora has evolved and continued its trend of not only winning races but by offering, with each new model solutions and technologies that not only improve the cycling experience but raise the standard for performance road-racing wheelsets in general. Bora has become the gold standard in carbon racing wheel solutions for many reasons ranging from reactivity, handling and featherweight yet reliable construction.

The Bora WTO project took this portion of the wheel's DNA as a central design focus and the Campy Tech Lab dedicated its energies towards pushing the limits of aerodynamic efficiency even further.

The family of carbon aero wheels is further enhanced with the 45mm profile, designed to appeal to a broader customer base. The design of the rim enables maximum aerodynamic penetration, and at certain angles, the wind can actually become a valuable ally to the rider. Aerodynamic hubs and ceramic USB cup-and-cone bearing system in the hubs themselves: every design choice has been made with a view to optimising performance.

The 19mm internal width of the rim enables tyres of 23mm, 25mm and 28mm to be fitted. In addition, with the 2-Way Fit version, Campagnolo offers its tried-and-tested technology with full compatibility with clincher and tubeless tyres. While the key purpose of these wheels is to deliver extreme performance, safety is also guaranteed by the Campagnolo AC3 (All Conditions Carbon Control) technology, which ensures safe, modular braking in all weather conditions. Available versions: bright and dark label, Campagnolo FW or HG11 body

Main Benefits

45mm... But Aero

• The rim design enables the maximum amount of aerodynamic penetration when the wind angle is between 12° and 19°, making it a thrust for triathlon athletes
• The streamlined design of the central part of the hub decreases the frontal area of the component whilst the special design of the flanges favours airflow detachment
• The elliptical aero cross section with 18 front spokes results in a far superior rolling resistance

Fast... And Fluid

• The well-known USB cup-and-cone bearing system guarantees smoothness in the ceramic bearings
• The 2-Way Fit profile allows you to mount either a clincher tyre or a tyre which offers the least rolling resistance possible: the tubeless tyre
• The 19mm inner diameter enables you to mount 23, 25 and 28mm tyres, with perfect pairing of the rim-tyre system

The Choice Of Campagnolo

• Campagnolo's rideability is enhanced by the 45mm profile, despite the aerodynamic design of the rim
• The wheel structure enables reducing energy dissipation, transferring all the energy produced by the cyclist to the asphalt
• A 45mm profile and a weight of less than 1500g for the pair makes this wheel ideal for riding on hilly routes

Technology

USB Ultra Smooth Bearings

Perfectly smooth surfaces and lower friction to reduce loss of power are the most interesting features.

Add on the reduced weight and resistance to corrosion and you will understand why Campagnolo can give you the best thanks to USB. All your power will be transferred onto the road.

Campagnolo has a long-standing reputation for the extremely high performance of its hubs in terms of smoothness and reliability. In fact, all the projects are entirely developed in our R&D department Campy Tech Lab and Campagnolo have put obsessive care into taking care of every detail.

The hubs with USB ceramic bearings (Ultra Smooth Bearings) further enhance the wheels' smoothness and reduce weight and the need for maintenance. Comparative tests have shown that USB bearings are 50% smoother than standard bearings.

Now improving your performance during the race or simply going for a ride with your friends will be easier.

USB - Ultra Smooth Bearings - technology is used for Record cranksets and for the new Shamal Ultra wheels.

G3 Geometry

Campagnolo’s unique G3 spoke pattern comprises groups of three parallel straight-pull spokes, arranged in a 2:1 ratio. Having twice as many spokes on one side allows wheels with G3 to counteract the asymmetric drivetrain and braking forces acting on them, creating more symmetric performance and equalising the load. Energy transfer and lateral rigidity are improved, and spoke tension is optimised, reducing stress and increasing lifespan.

All Campagnolo disc brake wheels utilise the G3 pattern, the front wheel has more spokes on the disc brake side, and the rear is biased to the drivetrain side.

AC3

It is a general consensus of opinion within the cycling world is that one of the major drawbacks of the carbon fibre racing rim is the reduced rim braking performance in the wet. To combat this problem Campagnolo has developed the All Conditions Carbon Control, or AC3 Technology.

The introduction of the meticulously researched textured design of the rim brake area creates a surefooted stopping power that is reliable and potent no matter what the weather will throw at you. On the Campagnolo Bora rim brake wheelset range, under dry conditions, the new technology increases braking performance by 3% compared to the previous Bora while increasing the distance from its closest competitor by over 6%. However, it is when the weather conditions deteriorate that the AC3 technology permits the Bora to excel increasing braking performance an astonishing 43% over previous Campagnolo models.

The powerful braking of AC3 represents a nearly 55% performance gap over that of its closest competitor making for a significant advantage when the heat of the race is on.

Features

Wheel Developed In The Wind Tunnel

Every wheel component, from the rim to the hub and the spokes, is designed to guarantee maximum aerodynamic penetration.

Rim Made Entirely Of High Modulus Carbon

The rim made of unidirectional carbon ensures the ride-ability Campagnolo is known for.

Cup-and-cone Bearing System

Easy to register balls/bearings - reduced possibility of ball/bearing play - precise cycling operations - steady performance levels.

Special Brake Blocks For Carbon Wheels

The special compound boosts braking performance on both wet and dry surfaces, without increasing the wear rate of the pad.

Hub Structure In Lightweight aluminium That Is Extremely Stiff And Aerodynamic

Optimised in the wind tunnel and designed for optimal rigidity and weight.

Specification

Spokes

• 18 steel spokes in the front elliptical cross section
• 21 steel spokes in the rear elliptical cross section, spaced in groups of three through the G3 system
• Anti-rotation technology on the radial spokes

Compatibility

• Campagnolo sprocket set 10/11/12-speed
• Shimano sprocket set / SRAM 10/11-speed
• SRAM 12 sprocket set (when purchasing dedicated replacement body)

Hub

• Black aluminium monolithic hub
• USB ceramic cup-and-cone bearing system
• Hub Edge: 100mm in the front, 130mm in the rear
• Pivot Material: aluminium
• USB cup-and-cone bearing system

Rim

• Profile Height: 45mm
• Rim Material: Carbon
• Rim Cross Section (H x W): 45 / 26.5mm
• Internal Diameter: 19mm
• AC3 technology on the braking rim
• Water Transfer graphic

Assembly

The Bora WTO 45 wheel is entirely hand-assembled by a specialised Campagnolo technician and is 100% checked by electronic instrumentation. This procedure ensures that every single Campagnolo wheel offers maximum performance and reliability.

Included

• Special brake block kit for carbon wheels (red compound): 40% better braking performance in wet conditions and 20% better in dry
• Lightweight Quick Release wheels with an aerodynamic profile and shiny finish
• 35mm tubeless valve
• 35mm valve extender
• Bushing to reduce the size of the valve hole
• 2 levers in composite material for tyre removal
• User manual