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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
CRF100 Exhaust
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[QUOTE="CR Swade, post: 740556, member: 21423"] Both the Pro Circuit and FMF are much lighter and reportedly add about 1-1.5hp w/ proper jetting. The pilot will need to be richened up to a 38 and main to a 105 @ lower elevations. Other than those two adjustments, you can only adjust idle speed, needle clip position and air screw...all of which should remain stock. I've got the ProCircuit and it is a nice fit w/ a decently quiet exhaust note. [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
CRF100 Exhaust
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