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Dirt Bike Brands - Other
400 E/XC - I Need A Little More Ooomph! Help!
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[QUOTE="trewent, post: 145360, member: 18622"] I purchased the SX muffler for my '00 400 exc and it woke up the power band quite a bit, it still is quite compared to a YZF of any size. It revs quicker, more top, lost a little oomph on the bottom. Then I put a 13 tooth front sprocket on, made a bit of difference not gobs, did make negotiating log crossings a bit easier. The FMF Q is actually the same technology already on the euro exc's in '00. I do not know if it is still the same. (mine is a euro model) I have a thread going on uping displacement on 400's. There have been some interesting banter. I am still considering purchase of a 520, just to make life easier. [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
400 E/XC - I Need A Little More Ooomph! Help!
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