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Dirt Bike Brands - Other
FMF Silencer for 400/520 EXC
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[QUOTE="triplephatmx, post: 112184, member: 23613"] Hey Thanks Jeb!! Yeah, I hear ya' - I definitely don't want to make the bike any louder and give our sport a bad name. I have heard good things about the new FMF Quietcore though. It supposedly brings the Yamaha 4-strokes to meet the USFS/State sound requirements - impressive if true!! Thanks for the jetting specs. I trust this is what you run on your '01 400 EXC? I am looking for just that - a little more ooomph! I don't expect (nor want) to transform it into a fire-breather. Do you run different jetting combos for different conditions or have you settled on the specs you gave in your post? Also, do you run pump or race gas? Thanks Jeb!! [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
FMF Silencer for 400/520 EXC
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