Mavic has launched a new Cosmic Ultimate 45 wheelset and says it's the 'lightest wheelset in its category'
Mavic has launched Cosmic Ultimate, announcing this to be the lightest wheelset in its category with a total weight of 1,255g. There is no question that this wheelset is a premium, beautifully handcrafted option, hence a £3,575 price tag.
According to Mavic, these wheels have the ideal balance of low inertia – which means they require little energy to move – and lateral stiffness , meaning that they are designed to accelerate fast whether you're climbing or hammering on the flat. The hubs are laced to the rims with 10 one-piece, elliptical R2R no-stretch carbon spokes. The R2R stands for rim-to-rim, which means that each of these spokes runs from one side of the rim to another - so it looks like 20 spokes both front and rear. R2R is technology that Mavic already uses. CNC and heat-treated aluminum inserts are used to connect the spokes to the rim.
The internal width of the rims is 19mm, which Mavic says matches 25mm tyres perfectly. They measure 28m externally and are airfoil shaped and designed to provide extra stability in crosswinds. Although the rim shape itself is wind tunnel developed, Mavic doesn't refer to any wind tunnel tests they would have conducted when it says that these wheels are"designed to break the wind barrier".
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