My yz has quite a lot of engine noise... not a graunchy noise or anything, just the standard rattle type noise a 250 makes when idling but it seems much louder than mates bikes. Rebuilt 40 hours ago, main bearings were replaced big end was fine. Not too worried about it as it has been like that since before the re-build but i wonder sometimes when im a couple meters away and all i can hear is the engine
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