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Dirt Bike Brands - Other
520EXC Jetting w/ Exhaust
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[QUOTE="trl junkie, post: 26429, member: 22000"] My understanding is the big KTM RFS needs more air. Drill a couple of holes (1") on your side airbox cover, buy a few of the 1" filter inserts that are specifically made for that, go up 1 or 2 on the main, and 1 or 2 richer on the needle too. When I bought my 520 the prior owner ad a big gun pipe on it, and it was too loud and had bad quality issues, so I asked him to put the stock one back on. He richened the pilot, needle and main when he had the Big Gun exhaust on it, and leaned it back towards stock some when he put the original pipe back on. I do believe the stock silencer is restrictive somewhat, but i like how quiet it is. I am suprised you did not feel much of a difference with your FMF. I have heard the regular Power Core S/A(non quiet) makes it stupid fast [img]http://dirtrider.net/ubb2/cool.gif[/img] ------------------ 01KTM520EXC 91Yam WR250 4sale 86XR350 74TM125 [/QUOTE]
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Dirt Bike Discussions By Brand
Dirt Bike Brands - Other
520EXC Jetting w/ Exhaust
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