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Reply to "roller rocker"

The latest in thing is that a product is "assembled in the USA of 'worldwide components' ".

Exactly how roller tips wear out is beyond me. I would be more concerned with the push rod cups. Those are hardened steel pressed into aluminum which may or may not have been hardened to T6?

The entire point is that they roll on the tips, not drag across them. That virtually eliminates wear.
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