Jetting for mountain trail riding

I live in Texas and need to find out what kind of jetting is needed for my

crf450r in order to trail ride at altitude in the Colorado mountains. Any help out there ?

158 main is a good starting point. Stock pilot and needle clip position is close enough.

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