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derment

whats a good way to break in new top end

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just put a new top end meaning rings and honed cylinder. It was a fluke deal. the shop said my piston was bad so I tore it apart to find everything to be is spec. only approx 25 hours on 2008 yz450. So I put new rings and honed the cylinder, then adjusted valves. how should I break it in compared to when the bike was brand new?

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Break it in the same way, pretty hard to do IMO. If you've got that much power on tap and your having fun its hard not to twist it to the bar. :)

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