Performance + versatility = maximum satisfaction. Racing 4 is the classic trick up your sleeve, because it gives that extra something, whatever the terrain.
It's light with a responsive medium profile offering an enviable superiority and eyes fixed on performance.
Our R&D department has capitalized on experiences from developing similar rims to create this package suited to diverse requirements, which makes no attempt to disguise its noble pedigree.
The 35 mm profile is a winning combination of great appearance and great performance. This medium profile makes all the difference on the flats at cruising speeds, but is no less excellent uphill, with agile and powerful relaunches.
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.
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 possible.
F.I.C. Fulcrum Identifcation 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.
Tracebility - 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.
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.
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.
Tyre Type: Clincher
Tyre Size: 28"
Astm Category: 1
Rim Material: Aluminum
Rim Material Details: Aluminum
Rim Height Category: Medium
Rim Height: Front And Rear: 35mm
Rim Width: 23.2mm, ETRTO 17c
Tyre Width: From 25mm to 50mm
Braking System: Caliper
Braking Surface/braking Options: Aluminum Braking Surface, Turned
Front Axle Compatibility: QR
Rear Axle Compatibility: QR
Front Wheel Spokes: 16 (8 Left + 8 Right)
Rear Wheel Spokes: 21 (7 Left + 14 Right), Two To One
Spoke Material: Stainless Steel, Double Butted
Spoke Profile Technology: Aero, Straight Pull
Front Hub: Aluminum, Aluminum Flanges
Rear Hub: Aluminum, Aluminum Oversize Flange
Bearings: Industrial Bearings System, Adjustable
Others: Plasma Treated HG Freewheel. Aluminum Axle
Weight Limit: 109kg (Cyclist)
Fwb Version: HG11, Campy
A great all-round wheel set for dodgy Melbourne roBy: Phil on 13 April 2021This Fulcrum wheelset was an upgrade to the Shimano RS-10's that came with my Lapierre Sensium. My weight is down the lighter end of the scale (68 kg) but I wanted a strong and relatively light set of wheels to cope with the very ordinary road surfaces in my area. The RS-10's were over 2 kg and the Racing 4's weighed in at 1750 g including rim tape so the weight difference was quite noticeable. Shod with a set of Pirelli P-zero tyres the ride is smooth, compliant and fast. After 1000 kms there have been zero issues, as I would expect. The freehub is not loud at all and there's a nice whirring noise once you hit around 35 km/hr. I can thoroughly recommend the P-zero's as they mount easily without any tools and don't even require much thumb strength to get them on the rims. The wheels look great on the bike but I removed the red stickers as they didn't match the paintwork. My only real complaints are that the back wheel was slightly out of true and the wheels didn't spin very freely out of the box, so I have to dock a star. There is a bearing pre-load adjustment on each wheel and once I loosened that off a quarter turn the wheels now spin forever. I'll get the back wheel trued once I have some more km's logged. Delivery from BikeBug was fast and the box arrived in good condition. BikeBug's pricing was really competitive and I'm always happy to purchase from a company with local stock. Thanks BikeBug.
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