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Looking for new exhaust

4 posts in this topic

I have a 98 yz400. I am thinking of a new pipe for better bottom end, or header. The selection is very limited with this being such an old bike. Heres what I have found. FMF , Pro Circuit , DR.D , and suppertrap all have a pipe. I was looking for some opinions on which one would possibly be better for low end and if I should look at either the silencer or the header for the best gains or should I look else where. Thanks guys.

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