The power of aerodynamics.

In describing a racing bike wheel like Wind 55 DB, you start with aerodynamics: it's time to try out on your bike how a finished and optimised profile down to the finest detail is able to make the difference.The 55 mm full carbon unidirectional rim, a full 27 mm wide, is the result of an endless cycle of tests, wind tunnel analyses and laboratory finishing. 

Then on the road, with the main objective of reducing the effect of side winds on the ride as much as possible.

And this is what you notice when you choose to race on Wind 55 DB: it cuts through the wind, guarantees stability and consequently very high average speeds without excess effort.

Completing this package id the 2-Way Fit, 19-mm internal channel, designed to offer the best support for tubeless tires and designed to best match the 25 and 28 mm sizes with the wide rim profile. Thanks to the Mo-Mag technology, no conversion will be necessary, the wheel is ready for use even without an inner tube.

If "Aerodynamics" is the first word that comes to mind to describe your new set of wheels, perhaps you should think of Wind as the first choice.

Technologies

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 the 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.

Rim Dynamic Balance (RDB) -  The concept is simple and elegant: balance the weight of the gasket, with an item of similar weight placed on the exact opposite side.

Directionated Rim-Spoke Coupling (DRSC) - Exclusive rim/spoke coupling system. It allows the rim, spokes, nipples and hub to align properly with the same tensioning value in all areas.

Directionated Rim-Spoke Coupling (DRSC) - 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 - 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 have been studied in the wind tunnel tests to ensure the best aerodynamic penetration possible.

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.

Traceability - A guarantee of quality

The keyword for their products is: traceable. 

If you find a little label attached to any Fulcrum® product, do not remove it. It will 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.

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.

Rim Full Carbon Technology - Full carbon Fulcrum rims are built using combinations, developed in the laboratory, of different types of fibre, including UD and the famous 90-degree 3K of models at the top of our range.
To build them we developed a special HTG (high transition grade) resin, whose glass transition point is at a higher temperature than any other fibre used in the bicycle industry.
This gives incomparable performance when 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.

Unrilled Rim Bed - No holes on the bridge connector means 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 resistance to fatigue, the possibility of giving the spokes more tension and more stiffness which, in terms of performance, means improved responsiveness and acceleration.

Disc Specific Rim - Fulcrum is one of the first wheel manufacturers on the market to offer two completely different rim profiles from disc to conventional brake. So, no adaptation, but a rim conceived based on years of design experience.
Not requiring a braking track, Fulcrum’s R&D department designed a completely new profile, aimed at saving every single gram of weight and at improving aerodynamic efficiency.
Its greater width makes it a perfect fit for tyres of 25/28mm upwards.

Specifications

Tyre Type 2-Way fit (for clincher and tubeless)
Tyre Size 28"
Discipline Road / Triathlon
ASTM Category 2
Weight 1680 g
Rim Material Carbon
Rim Material Details Full carbon, "UD" - carbon fiber finishing
Profile Height High
Rim Height Front and rear: 55 mm
Rim Width 27 mm
Inner Rim Width (Channel) 19 mm
Tyre Width From 23 mm to 50 mm
Braking System Disc brake
Braking Surface/Brakes Options AFS
Front Axle Compatibility HH12-100
Rear Axle Compatibility HH12-142
Front Wheel Spokes 24 (16 left - 8 right)
Rear Wheel Spokes 24 (8 left - 16 right)
Spokes: Material Stainless steel, double butted
Spokes: Profile Rounded, straight pull
Nipples Aluminum
Front Hub Aluminum, Aluminum flanges
Rear Hub Aluminum, Aluminum flanges
Bearings Sealed cartridge bearings
Others Aluminum Axle
Weight Limit 109 kg (Cyclist)
FWB Options HG11, Campy, XDr

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