E Eric72 Member Joined Jul 2, 2010 Messages 6 Aug 19, 2010 #1 Thanks for checking this out. I'm about to get my heads rebuilt and was wondering if there performance mods I could do while I have the heads off? Larger valves? Certain brands? Anything to get more out my 9r.
Thanks for checking this out. I'm about to get my heads rebuilt and was wondering if there performance mods I could do while I have the heads off? Larger valves? Certain brands? Anything to get more out my 9r.
