WR450 stock gearing. removed baffle,grey wire,snorkle,rejet. I'm 200lb approx. with gear. A buddy with GPS on KTM520 riding beside me on a dirt road said I was running 92mph at the rev limiter. When I sat up and said that's it, he ran the KTM520 up to 95mph and said that was all it had. It felt like the bike was running slower, but after riding sportbikes then getting on a bike that tops out at almost 1/2 the speed it does seem slow. Hope this helps.