Fulcrum Racing Zero Carbon Competizione Disc Road Wheelset – Black

The new model follows the most minimalist trends in terms of looks, thereby making the technical choices taken by our engineers even more astonishing. Restyling did not stop at aesthetics alone, despite being the most eye-catching and inspiring aspect, but focused above all on the heart. The Racing Zero Carbon CMPTZN DB now mounts CULT bearings which in addition to ensuring unparalleled smoothness also make the wheel 10 grams lighter.

The carbon rim has a dual unidirectional carbon finish with ARC TECHNOLOGY reinforcements and a Twill carbon finish in the areas surrounding the nipple thereby reinforcing the rim at the most critical points. All with an aesthetic effect that makes the rim unmistakable even when viewed from a distance. The profile retains the characteristics of the traditional version: 30 mm high profile, 19 mm internal width and above all the 2-Way Fit™ technology.

The technical package is completed by the characteristic 2:1 spoke lacing (different for front and rear wheel) including aerodynamically shaped parts and the MoMag™ solution. Racing Zero Carbon CMPTZ DB confirms its DNA: the absolute benchmark among multi-purpose wheels, now with an extra touch of style and elegance, a wheelset ready to accompany enthusiasts on their next challenges, especially when facing 2-digit gradient climbs.

Technologies:

2-WAY FIT™
2-Way Fit™ profile for tubeless and clincher.
Tubeless technology was first used by the auto industry, then by motorcycles and now has reached the cycling industry. After its debut with mountain bikes the moment has come to “put it on the road”, and that’s what we propose to do.

We have developed our 2-Way Fit™ technology to ensure the perfect compatibility of our tubeless rims with normal clincher types and tubes. 2-Way Fit™road bike wheels are perfectly multipurpose for tackling every situation. Thanks to a special impression in the valve area, the tubes are fitted with maximum precision while keeping the tube perfectly stable inside the tyre.

Housing the valve for tubeless tyres is also risk-free, with the unquestionable advantage that there are never any air infiltrations caused by non-ideal positioning when fitting.

CULT™ – CERAMIC ULTIMATE LEVEL TECHNOLOGY™
Behind this project is the exclusiveness of Cronitect® steel, using “Advanced by FAG” technology by Schaeffler Group employed for the bearing races. This steel is resistant to corrosion at the highest level until the point that no grease is necessary for lubrication, maybe just a small amount of oil.

The top quality ceramic balls, thanks to the absence of lubricating grease and the precision machine of the cup and cone technology, allow to reduce the friction coefficient drastically and then increase the smoothness of triathlon and road bike wheels by as much as 9 times compared to standard bearings. An outstanding result was achieved by using cutting-edge technologies in the field of materials processing.

RDB™ RIM DYNAMIC BALANCE
The concept is simple and elegant: balance the weight of the gasket, with an item of similar weight placed on the exact opposite side

2:1 TWO-TO-ONE™
When you push on the pedals, the rotational force on the sprocket induces a slackening of the freewheel spokes with a consequent loss of rim tension.

This results in undesirable flex of the whole wheel and an unavoidable loss of energy. Fulcrum® has solved this classic cycling problem with its 2:1 Two-to-One™ Spoke Ratio patent, by doubling the spokes in the critical zones.

2:1 TWO-TO-ONE SPOKE RATIO™ – DISC BRAKE
A system that is as simple as it is effective, the result of the ingenuity of Fulcrum® engineers and attentive observation of the results of the tests performed on the wheels daily.

These tests made it possible to understand that the forces that act on the sides of the wheels, and therefore on the spokes, are extremely different; but what’s more, the differences between the front and rear wheels are also evident and significant. The front-wheel has to remain stable even during braking of the disk on the left side, and the rear wheel, in addition to the sprocket set, has to compensate for the traction of the force on the chain side.

DRSC™ – DIRECTIONATED RIM-SPOKE COUPLING
Exclusive rim/spoke coupling system. It allows the rim, spokes, nipples and hub to align properly with the same tensioning value in all areas.

MOMAG™
What is MoMag™?
A magnet and lots of ingenuity. This was what led to the patent for the well-tested “Mounting Magnet” system, or MoMag™.

ANTI-ROTATION SYSTEM™
This new system raises the concept of spoking to a new level of performance for road bike and triathlon wheels ( and Mtb too)
The Fulcrum® engineers have redesigned the spokes and the hub housings to create a solid and unmoveable whole. The result is that the spokes

a) will never lose their initial tension, thus keeping the wheel perfectly reactive and centred
b) will remain in the position that has been studied in the wind tunnel tests to ensure the best aerodynamic penetration possible.

F.I.C. FULCRUM IDENTIFICATION CARD – 100% HANDMADE QUALITY
Right from its inception, Fulcrum® has been marked by the feature that continues to this day: that is to design, prototype and industrialise all the wheels characterised by the red “F”.
Indeed these take shape inside of the R&D, the leading-edge department that represents the beating heart of the Italian company.

Every single component of the wheel, the materials chosen and the technologies applied are the tangible result of the effort that Fulcrum® makes every day to give you maximum performance and reliability.

TRACEABILITY
A guarantee of quality

The keyword for our products is traceable.

If you find a little label attached to any Fulcrum® product, do not remove it. It will provide you with a guarantee in case of an ascertained defectiveness of a production batch, and so the component needed or wheel will be traceable.

All this because, devoted to its mission, Fulcrum® demands absolute perfection and safety for its customers.

AFS AXLE SYSTEM™
The Axial Fixing System™ is the solution developed by Fulcrum® to fix the disc brake to the hub. The constraint granted by the butt area of the release mechanism, greater than in familiar standard ones, makes it possible to obtain greater structural rigidity and therefore more precise and powerful braking.

WIDE RIM TECH
Fulcrum®’s R&D department, following requests from the competition circuit, has worked to create rims that are wider than before, about 4 mm or more than previously. This technical choice provides an ideal basis for 25/28mm tyres, the sizes currently popular.
This ensures stability, excellent handling and superior comfort.

UNDRILLED RIM BED
No holes on the bridge connector mean that the rim is uniform at every point, free from critical areas subject to stress.
The advantages are immediately clear: less weight, longer lasting rims, greater fatigue resistance, the possibility of giving the spokes more tension and more stiffness which, in terms of performance, means improved responsiveness and acceleration.

CUP & CONE
The cup-and-cone bearing differs from the classic cartridge bearing because it works in perfect alignment with the forces involved, weight and thrust from the frame, as the bearings run in a race positioned directly opposing these forces.

HIGH STRENGTH ALUMINUM
Special aluminium – the best aluminium wheels require carefully chosen materials. For “High strength Aluminum”, Fulcrum® R&D uses only the best aluminium alloy 6082, with artificial ageing T6 temper that stabilises the alloy and gives it maximum life and reliability. Aluminium 6082 has the highest strength of the 6000 series and has replaced 6061 in many applications. It is generally used for high-stress applications.

CARBON HUBS
In line with their aim to save every possible gram of weight and to choose the most advanced technological solutions, the R&D department has developed a seamless carbon hub. The fibre selected is woven at 90 degrees, for the enhanced balance of torque when pedalling.

PLASMA FREEHUB
The Plasma treatment makes the aluminium especially hard and resistant to surface abrasion and wear. This has allowed the thickness of materials to be reduced to a minimum, achieving advantages of lighter weight, while maintaining lifespan and reliability.

OVERSIZE FLANGE
The Oversize Flange was developed from the need to create a system to transmit every watt to the ground without dispersion, stiffening the wheel system where necessary, without having to add spokes or superstructures that increase weight. The oversize flange uses physics to solve the problem. It increases dishing and enables spokes to be shortened. Doubling the spokes creates a balanced system that is excellent at transmitting torque.

MONOBLOCK HUB FOR DISC
The rear hub of a top-quality disc brake wheel is a technical problem to be solved. Fulcrum®’s R&D department found itself facing a fundamental choice: on which side to put the oversize flange of the Two-to-one™ system? Disc or sprocket side? Without question – must stay on the sprocket side.

To combat the loss of braking power from flex and torque of the connector between the two sides of the hub, a special one-piece system has been devised with internal stiffening ribs.

SPECIFIC NIPPLE HOUSING
7% more reliable.

Such a small part, yet so important. The nipples and their housing are some of the most important elements that are taken into account during the design of a wheel.

During the development of the new E-Mtb Fulcrum rims, a lot of work was put into this aspect. The housing has been re-designed and now it makes it possible to eliminate the nipples’ hard work.

Thanks to special housing, with side guides on both sides, the nipple sets on a stable base, perfectly in position, oriented towards the spoke.

This makes it possible to make the distribution of the tensions in the rim more even, creating thus perceptible benefits in terms of effort and rigidity: this prevents misalignments under stress and, as a consequence, deformation to the structure.

ARC TECHNOLOGY
Material only where needed, not where it is superfluous. Orienting the carbon fibres with the desired result in mind, thinking of the rim and the sort of wheel we are creating.
This is the concept that inspired the Fulcrum R&D division in their development of ARC, the new technology used for layering the sheets of carbon in the mould to create different zones depending on vibration during racing.

During the study of the rim, the stress points and directions of the forces when accelerating and braking are analyzed to help decide which carbon to use and how to layer it in the finished project.

The critical zones, where reinforcement is needed, are usually the spoke eyelets, while the rest of the rim is lightened as much as possible. The difference in material between these two zones can be as much as 20%, acting as reinforcement trussing for the pillars of a bridge.

When requirements are different why use the same structure? Better to choose the most suitable in terms of lightness or fibre direction.

For rim construction, we have chosen T800 high modulus carbon, which guarantees the best weight/performance ratio, as well as enabling complex processing directly in the mould without the need for further stages.

Its outside-the-box look, therefore, derives from a technical requirement, enhancing the character of the wheel and above all further raising the level of the wheel’s response modulation during racing: every cm² is called on to do its job in creating the best combination.