honda 400ex rev box?

Hi just picked up a 2002 honda 400ex with Dubach Racing Development full exhaust air box lid removed  its pretty quick just trying to get alittle more out of her just wondering how would a rev box do and anybody have any suggestions on what kind to get really dont know anything about them any input would help 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