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Message: [QUOTE="g_man80, post: 935701, member: 57332"] I just picked up an '03 crf450 and had it out for the first two rides this week (just trail riding). The chain slack is adjusted correctly and the sprockets are fine, but it seems to be making a lot of noise (under power). The trails are pretty rockey and rough and when I'm pulling at low rpm the chain makes a slapping/banging noise. It's only at low rpm. When I get into the meat of the power the chain smooths out and the noise goes away. My cr250 did it a little bit, but this is a lot more noticable. The chain doesn't seem worn out, but could it be time for a new one? And to get an idea, the bike only has about 15 hours on it total. Any help or opinions would be greatly appreciated. Thanks, G [/QUOTE]