stock '06 yz450 needle

3 replies to this topic
  • Fasz Kalap

Posted February 21, 2012 - 08:56 AM


Can you guy tell me what the stock needle code for the '06 yz450? Looked in the fiche, but they show a lot of difference needle. Also, which main and pilot


  • Mr. Neutron

Posted February 21, 2012 - 09:11 AM


Hey, Fasz Kalap!

If I'm readin' my manual correctly, an NFPR is the stock needle (clip position #4), the stock main is a #165, and the pilot jet is a #42. Fuel screw out 2 & 1/8 turns. Hope this is correct, and hope it helps!


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  • Fasz Kalap

Posted February 21, 2012 - 09:33 AM


Thanks !

  • grayracer513

Posted February 21, 2012 - 09:34 AM


OEM 2006 YZ450F(V) Jetting:

Main Jet: 165
Pilot Jet: 42
Starter Jet: 72
Leak Jet: 55
Fuel screw/Setting: 2.125-2.5 turns out
Needle/Position: NFPR-4

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