Fulcrum Speed 25 DB 2WF C21 AFS wheelset

Developed with a precise objective: maximum performance uphill

Fulcrum’s new Speed 25 marry lightness and handling in a low profile wheel, which is perfect to conquer peaks and enjoy the downhills, thanks to the application of Fulcrum’s premier technologies. The inspiration for the development of the Speed 25 were the race-winning Racing Light XLR. An extremely successful and popular wheel both with the general public and with the professional racers who used them for mountain stages. The Speed 25 have a 26 mm profile, which is symmetrical on the front and asymmetrical on the rear, to optimise the sweet spot between lightness and aerodynamics. With an official weight of only 1,285 grams, they are the ideal wheel for cyclists looking to post their best times uphill, but also for ultra-cyclists who have to deal with adverse weather conditions and want a stable and reliable wheel even in strong gusts of wind. The Speed 25 have been developed in a disc-brake version, with an inner rim width of 21mm and Fulcrum’s proprietary technologies, MoMag™ and DIMF. The minimally-designed hubs use USB™ ceramic bearings. Lightness, handling and smoothness are the key aspects of the wheels’ performance.

Features

• Tyre type: 2-Way Fit™ (tube & tubeless ready).
• Tyre size: 700c.
• Discipline: Road.
• Astm category: 1.
• Front wheel weight: 621 g.
• Rear wheel weight: 742 g.
• Rim material: Full Carbon.
• Rim material details: Direct Inmold Matt Finish (DIMF).
• Profile height: Low
• Rim height front and rear: 26 mm, asymmetric.
• Rim width: 27.6 mm
• Inner rim width(channel): 21 mm
• Braking system: Disc brake.
• Braking surface/brakes options: AFS™.
• Front axle compatibility: HH12-100.
• Rear axle compatibility: HH12-142.
• Front wheel spokes: 24.
• Rear wheel spokes: 24.
• Spokes: material: Stainless steel - double butted.
• SPOKES: PROFILE Aero, straight pull
• Nipples: Aluminum.
• Front hub:Aluminum.
• Rear hub: Aluminum.
• Bearings: USB ceramic bearing.
• Others: Extra black “F” sticker, Plasma FWB , Bags included.
• Weight limit (system): 120 kg.
• Fwb options: shimano.

Included:

• Wheel case.
• Valves tubeless.

Technologies

2-Way Fit
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've developed 2-Way Fit™ technology to ensure the perfect compatibility of tubeless rims with normal clincher types and tubes. 2-Way Fit™ 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. The advantages are indisputable: the tests have highlighted an unique increase in smoothness. Because there is no tube, the friction caused by rubbing against the tyre is eliminated, while the perfect adherence of the tyre to the rim prevents the dispersion of energy.
Tubeless tyres do not suffer from sudden deflation when punctured which is a great advantage in safety terms. There is also no risk of snake bites as there is no tube to rupture.

USB™ Ceramic Ultra Smooth Bearings™
Fulcrum® 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 and we have put obsessive care into taking care of every detail. The hubs with USB™ ceramic bearings (Ultra Smooth Bearings) further enhance the triathlon and road bike wheels’ smoothness and reduce weight and the need for maintenance.

F.I.C. Fulcrum Identification Card - 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 Fulcrum's 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.

Undrilled 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.

Asymmetric rim
The asymmetry is designed to improve rim tension, balancing the forces from brakes and sprocket cassette.

Plasma freehub
The Plasma treatment 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, while maintaining lifespan and reliability.