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Re: Ceramic wheel bearings?
My 96 Jimmy had stock ceramic bearings. I replaced them with steel rolling bearings and good high temp grease. Bearings lasted ~100,000 miles. I'm on a new set. The bearings are cheap and easy to replace. I would suspect races use ceramic bearings for the high temps they run when braking. Probably one time or short time use for them. Either set is good. I think, steel is more sensative to wear if metal shavings start to gall them. Either way, replace the racer or bearings will wear out faster.
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