Mavic's Crossmax and other mountain bike wheels are easily convertible to whatever hub configuration suits your fancy. The 12 to 9mm Axle Adapters take the 12mm shell and convert it to a standard 9mm quick release compatible shell. With just a few tools, the adapters are easy to insert. They are lightweight and designed so that you'll feel no difference in ride feel. You'll need one set for each hub you are converting.
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