Posts
18
Joined
5/8/2018
Location
CA
Hey everyone, I am new here but I have looked high and low for what to do with my bike. I just bought a full DRD ss exhaust (header and slip on) for my 2009 yz450f. I went on their website and it said a 162 main jet and a 45 pilot jet. I mainly ride in the summer so I want the bike to perform best at that time. from my understanding the stock jet size for an 09 yz450f is a 160mj and a 45 pilot jet. So, my question is, is their website right? do I need to rejet to begin with? and just some overall guidance with my build, as far as drive train the bike is stock.
Any input is greatly appreciated.
Any input is greatly appreciated.
Paw Paw
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