The top range for clincher tyres moves up a gear with the new 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 rim, 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're 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 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.
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.
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.
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.
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 - 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.
F.I.C. Fulcrum Identification Card - 100% Handmade Quality
Traceability - A guarantee of quality
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 their range.
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.
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.
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.
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.
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.
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.
AC3 - All Conditions Carbon Control - Braking directly exploits the brake pad’s contact on the fiber, improving grip and dissipation of water and moisture from the surface, allowing it to work immediately in ideal conditions and give better results.
Tyre Type: Clincher
Tyre Size: 28"
Rim Material: Carbon
Rim Material Details: Full Carbon, "Twill" - Carbon Fiber Finishing
Rim Height Category: High
Rim Height: Front and Rear 55mm
Rim Width: 24.2mm, ETRTO 17C
Tyre Width : From 25mm to 50mm
Braking Surface/braking Options: "Twill" Carbon Fiber Braking Surface. Ac3 Treatment On Braking Surface
Front Axle Compatibility: QR
Rear Axle Compatibility: QR
Front Wheel Spokes: 18 (9 Left + 9 Right)
Rear Wheel Spokes: 21, Two To One (9 Left + 9 Right)
Spokes Material: Stainless Steel, Double Butted
Spokes Profile Technology: Aero, Straight Pull
Front Hub: Carbon, Aluminum Flanges
Rear Hub: Aluminum, Aluminum Oversize Flange
Bearings: USB Ceramic Bearings. Adjustable Cup & Cones Bearing System
Weight Limit: 109kg (Cyclist)