Wes in ID
Well it worked for about 20 hours before it started to "snap" and "pop" at the exhaust when running. There is also not quite enough in the bag to do an exhaust in my opinion.
Eddy in WA
Awesome header, fits perfect on 450x. Adds throttle response and some low end punch.
Plenty to fill the can and lasts quite a while.
Curtis in TX
power band comes in a little later and stronger
Garry in NSW
must have, easy to use and still going strong years after purchase
SHAWN in MI
I tried using oem orings to seal exhaust leak to no avail. I used the fmf oring kit, no more leak!! Very pleased!!