YFZ 450 Main Jet (200+ sizes)

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Apr 27, 2005 | 01:45 AM

rc3

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YFZ 450 Main Jet (200+ sizes)

Have any of you ran these sizes, I was reading another forum where some of the guys were running 200 - 220 main jets, and they have the normal mods full exhaust system, cam mod, pro flo kits. Just wondering if any of you were running that big!

Apr 27, 2005 | 06:06 PM

2fun

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YFZ 450 Main Jet (200+ sizes)

Quote:

Originally posted by: rc3
Have any of you ran these sizes, I was reading another forum where some of the guys were running 200 - 220 main jets, and they have the normal mods full exhaust system, cam mod, pro flo kits. Just wondering if any of you were running that big!

I have only heard one person say this, and I have to believe something is clogged, or he has an air leak.

You (to my knowledge), should NEVER have to go above a 180 main. Most run 168-175