Which header?

Which header do you reccomend? I have a bored out wr400, so a header for a WR426 might work better for my bike. Is the FMF Powerbomb the best?

I have one on my 03 450, it may give you a little more bottom end but it is definetly quieter. :)

I went from stock to a Powerbomb SX. More bottom end, but I am not sure it was any quieter.

I think i'll get the powerbomb MX, and put my cam timing back to YZF specifications. thanks for the responses.

I am happy with the Powerbomb SX :)

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