best slip on exhaust for a yz450f?

what is the best slip on exhaust for an 06 yz450f? I ride mainly in the dunes. whick one gives the most power?

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