12-13' wr450 stock pipe with performance insert?
Posted April 12, 2013 - 09:57 AM
Posted April 12, 2013 - 12:56 PM
The performance insert gave a modest increase over stock, but nothing to jump up and down about.
In the end you will probably end up with a full slip on like I did. Only complaint with it is the noise.
Posted April 12, 2013 - 04:17 PM
The YZ comes from the factory as a fully race ready competition machine and the pipe is unrestricted as such. The WR is completely corked up from the factory to meet overly restrictive noise and pollution standards. Swapping the pipe out on the WR will make a huge difference in power across the whole RPM range where as on the YZ you are basically just moving the power around.
Posted April 13, 2013 - 12:39 PM
You cannot compare the YZ pipe with a WR pipe for performance.
I figured as much, that's why I had to ask the question. Wasn't sure if once the comp insert was in if it made the pipe more like a stock yz pipe or more just like opening up the pee-shooter tail piece. Anyway, thanks guys for the responses; looks like I'll have to just buy the FMF.
Posted April 14, 2013 - 09:31 AM