Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0

Jetting confusion. 07 450F

1 post in this topic

07 YZ450F. Ok I have looked at everyones jetting on the jetting link and I am confused. I am 500 feet above sea level and anywhere from 60 degrees and up top lets say 100 in temp. I am running a FMF Factory 4.1 Muffler and everything else is stock. What jetting show I be running? i know on the 06 YZ250F it was common to run much richer jetting and it worked great. Should I be applying the same thinking on the 07 450F or going leaner?


Share this post

Link to post
Share on other sites

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
Sign in to follow this  
Followers 0