I use these bearings in a front and read bike hub from American classics. I just clean them and gave them a little bit of Finishline teflon ceramic grease and after 20 miles the bike runs like a dream much better than before. If you want the American classics ceramic bearings you have to pay 3 times more. PS I use ceramic bearings ceramic balls on my bikes skates and where i can put them? I'am a BIG FAN OF CERAMIK BEARINGS and these are very GOOD BE HAPPY GO CERAMIC DOCDANHOJ france
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July 23, 2011
biker from Boston, MA
Replaced bearings in high end bicycle freewheel. At installation this bearing is much smoother than the factory bearing. Hopefully they will stay smooth.