yz pipe on a wr
Posted April 16, 2000 - 08:02 AM
Posted April 16, 2000 - 06:46 PM
I have a WR-YZ timed and I have been running with a YZ exhaust almost since the day I purchased my bike. A lot of my friends are expert and pro motocross racers and they have tried ALL the pipes out there. They all seem to like the stock YZ pipe the best (thru their expensive experimenting it sure has saved me a lot of $$$). It has the best mid-range power - you will need to purchase a longer top bolt and rubber bushing to mount it. Also, as far as putting a screen inside to make it "spark legal"....good luck - lot's of work! And the plaque that is welded to the inside of the pipe says "for race use only." You will need to replace that as well with one that states "USFS approved". That's an even bigger project, (unless you happen to own a welder and letter stamp set!) I tried the Big Gun exhaust system with spark arrester and gained top-end, but lost bottom-end. So I took that off and put on my YZ exhaust with a DMC tapered head pipe. What a rocket on the bottom-end now! If you know of any good bolt-on mufflers that are "spark legal" please let me know. (I've tried the E-series and didn't like it).
Let me know how it goes!
Posted April 17, 2000 - 11:15 AM