Hi,I have a 2007 ex250r and I was wondering if an exhaust header swap is possible by using a 2008 single side header.I am trying to use a single exhaust instead of 2.It should bolt on with no problems...right?.Thanks
yeah, it would take some welding to do it yourself. You could try looking up a head and seeing if you can find a header for a Muzzy exhaust for a 88-07 250. That will still take a little fabrication of the belly pan fairing since it's a little too big to fit the fairing on as-is without the header melting the plastic of the fairing.
After you get that header, it might be easier to try and get a stock 08-12 exhaust to fit on the Muzzy header. (Muzzy exhausts run about $400-$500).
No matter what you do, changing from the stock to a 2-in-1 exhaust system will require a re-jet.