Mine is a '98 200. Jetting: 155 main, 45 pilot, and stock needle on the 2nd position from the top. Changed fork springs out using XR400 springs, and of course, the airbox mod...that's pretty much it. I like the Maxxis IT's for our terrain, here, and an XRing chain won't hurt anything, either. I'm much too hard on my pipe to consider an aftermarket, so until I see a reduction in dents on the stocker, I'll stay with it. I am considering having my engine Gorr'ed out this winter, though. Let me know if you want to go riding...my WR426 buddy has a dinged shoulder right now.