Got to line up against and ride a zr 900 on saturday. I have a properly setup 02 800. In a race the 900 is faster on the bottom but the 800 is faster mid and top. Granted that the 900 was stock is still was not much faster. from a dead stop the 900 would come out of the hole then the 800 would be on the bumper and slowly gain. From a roll on start the 800 would win by a few sled lengths. When i rode the 900it had more low end but not as much mid and top. the 800 was jetted, reeds, d+d breather, advanced timing and a slight head mod. All trail mods because out of the 1200 miles this season 5 were racing so it is mostly set up for trail. Also some guy with an 01 T cat with d+d pipes got spanked by both of us. I felt bad for the T cat it obviously was not set up properly. At least it was a good last season ride for the Artic Dominance. Also a few MXZ 800 showed up but would not line up.