Funny you should mention those front bearings. I was a little worried about those, as like you, used to kill them in both cat 2k and 3k. However, i haven't changed one single bearing in front of SX.
No entirely sure why, but hasn't been a problem. I suspect it is because the outer race is better supported by the hub, and the inner races have a spacer between them that i think touches both bearings.
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Matthew White
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