With that power you should hit 117 if your machined for overdrive and have stock gears. If your not your clutching is off. JMO. I saw 117 last winter whenever the trails were firm and I'm only running 6.5#'s.With proper cluth machining and over drive I could max out at about 110 mph with the 252 hp. Now that I am going another 70 hp and this machine will mostly be drag raced we are going the longest we can for top end speed. The dyno said my top end on the current gears was 117 but in real world it could not do it.