jetting question for 09 yz450f

Hi guys.. could someone please advise me. I put a fmf 4.1 slipon on my new 09 yz450f. Am i gonna need to change the main and needle clip position? I was thinking of using the 165 main that came in the bag of goodies, also moving the clip one position to the 4th position...any real world advise would be helpful..thanks.

I put an powercore 4 slipon and a twinair filter on my 09 and didnt have to touch the carb.

i couldnt get it to show the posts

When I click the link it takes me to post #6, and I can scroll up and down. Anyone else have a problem with that?

If you can't get it to work for you for some reason, try this:

It's the '08-'09 page of the jetting sticky on the index page.

i got it...thanks

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now