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2004 CRF 450 Slip on Big Gun Race Tip

Posted: Fri Jun 29, 2007 12:39 pm
by Jadee42
Should I rejet the carb? Seems to run fine but this is the first 4 stroke I have owned had YZ250 before. I don't want to run this thing to lean.

Re: 2004 CRF 450 Slip on Big Gun Race Tip

Posted: Fri Jun 29, 2007 3:13 pm
by Asmith
Jadee42 wrote:Should I rejet the carb? Seems to run fine but this is the first 4 stroke I have owned had YZ250 before. I don't want to run this thing to lean.


I am assuming we are talking about an "R". It should be jetted from the factory for a non-restrictive exhaust.

That is not to say that it couldn't use a rejetting based on elevation or other factors, but just putting on a Big Gun slip on shouldn't make much difference.