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09 YZ450F Snowbike Questions

polarisfornow

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Jun 2, 2008
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Hey everyone, I tried using the search function as I hate when people ask questions that have been covered a million times but had no luck on this.... I have an 09 YZ450F and I just have a few questions.

Do I need to rejet or does anyone use a Holtzman or something similar?

And what is the recommendation on fork springs if running a LT kit?
 
S
Dec 14, 2009
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Rejetting isn't really necessary but I put a larger pilot in mine to make cold starts easier. I ran .54 fork springs last season with my ST, this year I'm having some .66 or .68s made. If you don't have aftermarket exhaust get one, it helped my '09 immensely.
 

polarisfornow

Well-known member
Lifetime Membership
Premium Member
Jun 2, 2008
1,258
512
113
44
Beautiful Colorado
Rejetting isn't really necessary but I put a larger pilot in mine to make cold starts easier. I ran .54 fork springs last season with my ST, this year I'm having some .66 or .68s made. If you don't have aftermarket exhaust get one, it helped my '09 immensely.

Where are you getting the springs from? I can't hardly even find .54's much less .66
 
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