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I've started to experience a vibtation from the rear wheel when freewheeling at speed which I am assuming is the free hub bearings. I'm struggling to find replacement bearings - has anyone changed these before or do I need to change the complete freehub?
Ideas please
Thank you
More likely than not, it just needs a relube inside the freehub body with some light mineral oil - 5 minute job, see the video's on youtube for instructions.
if its got beyond that, grab the top ring of the cassette, and try rocking from side to side, if it flops around, then the bush is worn, and its new freehub body time.
bearings should be available via any mavic retailer, their part no M40660, lead time normally 4-5 days from order if they have to get them in special, but big dealers normally have spares in their mavic tackle box.