Based on posts I've read, the stock yz muffler would be an upgrade from the stock wR. I'd like to try a stock YZ 450 exhaust before I rip the guts out of the stock WR muffler, or spend more money on a Dubach or FMF system.(my wife might kill me in my sleep
I'm not sure which years are compatible. any help will be greatly appreciated.
I also saw a post mention a yfz/or yzf muffler?? will other model mufflers work?
Thanks, Dave