Fulcrum Racing Zero C17 Competizione Clincher Wheelset


About Fulcrum Racing Zero C17 Competizione Clincher Wheelset

The Fulcrum Racing Zero C17 Competizione Wheelset is for those who at all times want the next best thing, in range and performance, moving up the Gran Fondo rankings.

Fulcrum might say it is the fastest ever aluminium Racing Zero – the perfect definition! A breathtakingly smooth run (thanks to CULT technology).

This rim is born to take on the bends, without giving a centimetre. “Competizione”, for the truly competitive.


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 Fulcrum propose to do. 

They have developed their 2-Way Fit technology to ensure the perfect compatibility of Fulcrum 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 the maximum precision at the same time as 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.

Ceramic Ultimate LeveL Technology (CULT) – 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 resistent to the corrosion of the highest level until the point that no grease is necessary for lubrication, maybe just a small amount of oil. The top of the range 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 achieved by using state of the art technologies in the field of materials processing.

Rim Dynamic Balance (RDB) – For those who at all times want the next best thing, in range and performance, moving up the Gran Fondo rankings. Fulcrum might say it is the fastest ever aluminium Racing Zero – the perfect definition! A breathtakingly smooth run (thanks to CULT technology). This rim is born to take on the bends, without giving a centimetre. “Competizione”, for the truly competitive.

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.

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.

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 have been studied in the wind tunnel tests to ensure the best aerodynamic penetration conceivable.

Fulcrum Identification Card (FIC) 100% Handmade Quality – Right from its inception Fulcrum has been marked by 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.

Tracebility – A guarantee of quality. The keyword for Fulcrums products is: traceable.  If you find a little label attached to any Fulcrum product, do not remove it. It is going to provide you 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 the absolute perfection and safety for its customers.

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 4mm 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.

Cup and 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.

Square Milling – For the new Racing Zero’s aluminium rim, Fulcrum decided to keep the triple-milled structure all the way through the profile to minimise aluminium thicknesses. Next, their technicians added 3D milling at the base of the spokes. This means less material but the same reliability since, in this particular design, the forces are well distributed over the rim. Triple and “Square” milling enable maximum weight reduction on the rim periphery, producing an extremely responsive wheel.

Differentiated Rim Height – Two different heights for front and back. A bigger challenge in construction, but necessary to achieve the very best.

The lower front wheel improves handling, limiting weight to a maximum and also mass involved when turning and relaunching.

The rear rim is higher and more solid, to transmit all the power to the wheel and increase stability.

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 conceivable gram of weight and to select the most advanced technological solutions, the R&D department has developed a seamless carbon hub. The fibre selected is woven at 90 degrees, for enhanced balance of torque when pedalling.

Plasma Freehub – The Plasma remedy makes the aluminium especially hard and resistant to surface abrasion and wear. This has allowed thickness of materials to be reduced to a minimum, achieving advantages of lighter weight, at the same time as 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.


Rim – New aluminum rim with a wider section: ETRTO 17C, external width 22,5 mm.

Milling – The combination of triple milling + “Square Milling” makes it conceivable to reduce the peripheral weight of the rim and to increase the reactivity of the wheel.

 Differentiated rim height: 27mm at the front to have a good handling; 30mm at the rear to transfer all the power to the wheel.

Hubs – Smoothness is ensured by the famous USB ceramic bearings. The cap and cone technology maintains the most efficient angle of contact between the bearings and bearing seat, increasing the smoothness and durability. The carbon hubs and oversize aluminum rear flange provide an innovative mix that provides excellent torsional rigidity and consequently a greater reactivity.

Greater reactivity to each change in pedalling tempo and more efficient power transmission to the wheel.

Spokes and Nipples – Aluminum spokes: a precise choice to ensure optimal rigidity and a special attention to aerodynamics.

Aluminum nipples – thanks the light weight they reduce the peripheral mass, enemy of reactivity.


Tyre Type: 2Way-Fit (clincher + tubeless)

Tyre Width (Suggested): from 25 mm to 32 mm

Weight: 1510g

Wheel Material: Aluminum

Rim Material: Aluminium (6082, T6 Pre-Aging), triple milling, Square Milling

Profile Height: Low

Rim Height: Front 27mm/ Rear 30mm

Rim Width: 22,5 mm, ETRTO 17C

Braking System: Caliper

Braking Surface: Aluminum braking surface, turned

Front Axle Compatibility: QR

Rear Axle Compatibility: QR

Spokes: Front 16

Spokes: Rear 21 (7 left + 14 right), Two to one

Spokes Material: Aluminum

Spokes Profile Technology: Aero, straight pull

Nipples: Aluminum

Front Hub: Carbon, Aluminum flanges

Rear Hub: Carbon, Aluminum oversize flange

Bearings: CULT ceramic bearings, adjustable Cup & Cones bearing system

Other: Plasma treated HG freewheel. Aluminum Axle

More About The Manufacturer Fulcrum

Fulcrum Wheels s.r.l. designs wheels and components for racing bikes and distributes them in over 30 countries worldwide. They were based on the idea of three aerospace engineers who are passionate about bicycles. The strong points of this young company include the use of unique patents, ongoing technological research, and the attractive and young-spirited design.

International buyers – please note: Import duties, taxes, and charges don’t seem to be included in the item price or postage cost. These charges are the buyer’s responsibility.

Please check with your country’s customs office to determine what these additional costs will be prior to bidding or buying.


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