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Jetting an 07 trx 450er......***


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just put an fmf factory 4.1 on my 07 trx 450er.

not sure what I should do about the jetting?

This is what was recomended for me to try out.

with airbox lid removed and 500-1000 feet elevation

160 main jet

HRC needle or CRF 450 needle in 4th clip

48 pilot jet

2 turns out on fuel screw.

what will this do to my bike???

if you have jetted a trx what problems did you encounter, and how did you fix them?????

thanks guys

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  • 8 years later...

TRX 450 2007 Exhaust: HMF full Intake: Uni Filter w/lid off Other Mods: N/A Elevation: 1500 Ft. Main Jet: 162 Pilot Jet: 42 Leak Jet: Unk. Needle/ OEM CLIP Fuel Screw: 3 Turns out

TRX 450 2007 Exhaust: HMF full Intake: Uni Filter w/lid off Other Mods: N/A Elevation: 1500 Ft. Main Jet: 162 Pilot Jet: 42 Leak Jet: Unk. Needle/ OEM CLIP Fuel Screw: 3 Turns out

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