Initially i thought they were great.

i was stoked when i first installed these bearings. However as I have used them for the past 500 miles i need to change my rating. These bearing deteriorated in half the time of my regular bearings. Ceramic is just not as hard of a material as steel, so it definitely makes sense they wouldnt hold up as long. Upon changing them with my next set of bearings, i noticed that they each fit differently into each wheel. Some where slightly larger, while others were slightly smaller. Basically, i am back to steel bearings. Ceramics are great, but i do not believe that the better performance for 75 miles is worth the tradeoff from long lasting steel. ImO

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