The Fulcrum top range for clincher tyres moves up a gear with the Speed 55C, a racing bicycle wheel that reflects developments in the research into materials carried out by Fulcrum's R&D team. The full-carbon rim has had a complete facelift, both in terms of the carbon used and the braking tracks, thanks the new AC3™ technology used.
The "Twill" weave carbon-fibre pattern is unlike any other used in the past, enhancing the elastic responsiveness of the rim, thus boosting reactivity when rising out of the saddle and the transfer of power to the ground.
A joy for rouleurs, sprinters and triathletes alike who seek an aerodynamic wheel that doesn't waste one single watt of power and is ready to accelerate and effortlessly maintain set speeds. In short, the range offers everything you need to achieve your targets within a group and feel satisfied when you look at the stopwatch.
55 mm is the size to choose if you are aiming to increase your power output and make the most of the flywheel effect created by the rotation of the rim: incredible speeds plus optimum support during the strongest accelerations. This versatile wheel is ideal for short climbs out of the saddle, when cycling on the flat or in triathlon races when making the most of aerodynamics is key.
Special properties of the Fulcrum Speed 55C Carbon wheelset:
Rims: 55 mm deep "Twill" carbon rims with a 17C cross section: this wider base provides more grip, more comfort and a superior handling. The rims are made from unidirectional carbon, among the best-performing currently available on the market. Their brake tracks are featuring AC3 - All Conditions Carbon technology. It uses micro laser incisions on the surface to eliminate resins and to achieve better roughness.
Aerodynamics: The wide and rounded profile reduces the friction coefficient.
Nipples: The nipples are specially shaped to facilitate the assembly process and to stay in place without the addition of any other cushioning material.
Rear hub with oversize flange: Carbon hub with oversize aluminum flange and Two-to-One™ technology: the doubling of the spokes on the cassette side provides greater torsional stiffness and therefore a greater reactivity at each pedal stroke. This means greater efficiency in the transmission of power to the wheel.
Front hub: The front hub features a carbon body, aluminium flanges and small dimensions so it is extra light. Smoothness is ensured by the famous USB™ ceramic bearings.
Spokes: This setup provides aluminium aero spokes. They ensure optimal rigidity and aerodynamics.
P.E.O. (Plasma Electrolytic Oxidation) coated freehub body: The freehub body for Shimano-SRAM will be submitted to Plasma Electrolytic Oxidation treatment in the laboratory. Despite the thickness of the material being reduced to the minimum, the duration and strength are maintained with the benefit of a lower weight.
Technologies of the Fulcrum Speed 55C Carbon wheelset
2:1 Two-to-One™: On the rear wheel the number of spokes on the drive side is twice as much that of the opposite side. Greater stability of the wheel thanks to the perfect balance between the spoke tensions - greater torsional stiffness and greater reactivity.
Anti-rotation System™: Keeps the spokes in the position of maximum aerodynamic penetration.
MoMag™: Allows the external profile of the rim to be free of holes - increases structural resistance - makes a rim tape unnecessary and reduces the weight of the wheel.
USB™ ceramic bearings: Reduce the friction between ball and bearing, increase smoothness, reduce weight and maintain performance over time, thanks to the absence of corrosion.
Included in delivery: wheelset (FW & RW), wheelbag, spacer
Material: rim: carbon with AC3 brake tracks
fw hub: carbon body with aluminium flanges
rw hub: aluminium
spokes: stainless steel
Weight supplement: per set | manufacturer infromation