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Item # CRI0004

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Item # CRI0004


We hear it time and again that rotational weight should be addressed first when looking to increase speed and efficiency on the bike. Pro cyclists know this all too well, as they're often seen milling around team trucks, discussing wheel options with their mechanics on the eve of critical climbing stages. They're always on the hunt for hoops that spin up fast, have the lowest possible weight, and are still stable enough to handle the high speeds encountered during blistering mountain descents. And for this year's Giro, Pro Team Astana outfitted their machines with Corima's featherweight Winium + MCC Tubular Wheels. Their svelte profile, ultra-low weight, and saturated carbon design proved crucial in helping the Astana boys maintain their hold on the Maglia Rosa until the very end.

To ensure quality, the Aero + MCC's hubs, spokes, and rims were all manufactured in-house by Corima in the same Southern France facility. Demonstrating the importance of this, the Aero + MCC is one of three sets of Corima wheels Corima that utilize its proprietary 12-carbon-spoke design. The key word in that sentence was 'proprietary,' as the precision of this wheel illustrates what's possible when carbon composites are developed and produced all under one roof. And not surprisingly, Corima is quite proud of this. According to Corima, the 'MCC' in the wheel's name derives from when the manufacturer first entered the cycling world, naming its early composite wheels 'My Corima Carbon.' For this set of carbon wheels, Corima chose to apply its 24mm rim profile, as this shape has been proven to be one of the lightest in the world. However, real-world results have proven that it's still versatile enough to handle a variety of racing situations.

For the construction of the Aero rim, Corima used pre-impregnated sheets of 3K (3000 filaments per square weave) carbon fiber for the wheel. These sheets were then formed into its torsion box 'Concept 2D' shape, which results in a subtle 'U-shaped' profile with a moderate 22.6mm width. And, besides lending itself to Corima's signature refined gloss and apparent carbon weave finish, this layup design also provides heightened levels of aerodynamics, stiffness, and ride quality compared to more traditional 'V-shaped' wheel profiles. This shape was the result of extensive CAD designs and wind tunnel testing, where Corima's engineers optimized friction pressure on various surfaces of the wheel and tire system. And, according to Corima, more than 60 prototypes were designed and tested before the final design was chosen for real-world road testing. Throughout all of these revisions, Corima ultimately discovered that by applying this specific width-to-height ratio, aerodynamics were able to be improved without sacrificing any strength.

We'd say that the biggest contributor to the Winium + MCC wheels' incredible ride quality and feathery weight (around 980g for the set), is the proprietary 12-spoke design. Corima built the wheels with just six evenly-spaced pre-impregnated carbon spokes per side. This design is not only incredibly stiff, but also much lighter than steel spokes. This is primarily due to the process of bonding the spokes to the rim, entirely eliminating the need for a spoke bed. The 12 conical TOP (Total Optimized Propulsion) spokes are both over-molded and bonded with structural epoxy adhesives, ensuring that they're able to handle even the most demanding of road surfaces. This is the minimum amount of spokes allowed by the UCI, thus making these wheels as aerodynamic and lightweight as possible.

The Winium + MCC incorporates Corima's proprietary 3K carbon hub shells, which were built with both titanium and aluminum in order to create a stable, lightweight platform. The wheels feature low friction, high precision annular steel bearings throughout. On the rear wheel, three tempered steel transmission pawls were spaced at 120 degree intervals within a 30-tooth ratchet ring. This ensures a fast and smooth engagement the moment that you apply pressure to the pedals.

The Corima Winium + MCC Tubular Wheel is supplied with brake pads, quick-release skewers, and a wheel bag. It is available in the color Black/white and in 700c size. Additionally, you're able to choose from either Shimano/SRAM or Campagnolo compatible freehub body. Please note that these wheels are sold individually, and that the Shimano/SRAM freehub is available in both a 10- and 11-speed freehub compatibility.

It's also important to stress that Corima does not recommend these wheels for riders exceeding 189lb (85kg).

Tech Specs

Rear Spoke Count:
Rear Hub:
Brake Compatibility:
Corima-approved brake pads
[rim] 3K carbon fiber
Rim Depth:
24 mm
Front Hub:
Front Spoke Count:
Rear Weight:
570 g
Complete Set Weight:
980 g
Front Weight:
410 g
Front Hub Type:
Recommended Use:
road cycling
Rear Hub Type:
Manufacturer Warranty:
limited 2 year
Rim Width:
22.6 mm
TOP Carbon

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