need help with jetting

ive got a 2010 YZ 250 F that's set up for sea level, were going to the qualifier in Colorado next month (6100' above sea level) what jets do I need??? is there anything else we can do to help with any supposed power loss?


If the jetting you have now is spot on, then the standard rule of thumb is three sizes leaner on the main, and one clip leaner on the needle. Do you know your current jetting?

i know little to nothing about jetting? never adjusted it, so bone stock, as i purchased it???

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