For 2013 Mavic has revised the outer freehub and drive side axle bearing and now uses a 609/1-2rs (9x22x7mm) replacing the 8x22x7 bearing. This kit includes the new 609/1 bearing and will not fit 2012 or earlier rear hubs.
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The balls are high quality Si3N4 (silicon nitride) P5 grade and nylon races, filled grease. Replacing your dried out or pitted wheel bearings with hybrid ceramic bearings has never been more affordable!
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