Do i need to change jets?

6 replies to this topic
  • LI_Thumper

Posted March 02, 2004 - 02:16 PM


I just got my '04 WR450F last week, I ordered a GYT-R muffler & header pipe, and yz throttle stop. I will also be removing baffle out of air box. My question is do you think I will need to change the jets?

  • RichBaker

Posted March 02, 2004 - 03:24 PM



  • Indy_WR450

Posted March 02, 2004 - 03:48 PM


Buy the JD jetting kit from this forum's TT store and get a 72 starter jet and a 48 pilot jet for colder weather. :)

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  • beezer

Posted March 02, 2004 - 03:48 PM


I ould do it.

Thumper Talk sells JD jetting kits, I hear they are the hot setup.

  • LI_Thumper

Posted March 03, 2004 - 05:44 AM


Thanks Indy, I will try that.

  • wayneoXCF

Posted March 03, 2004 - 06:00 AM


Are you riding at sea-level? Im using a 168 main, w/ a YZ needle. Good results thanks to JD.

  • LI_Thumper

Posted March 03, 2004 - 02:00 PM


Yes, I am in Port Jeff. Do you think the 168mj will work as well for a 450?


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