I used to have one of these as my guest sled. Just sold it this fall.
I'd say top speed is around 90+ mph. Acceleration is what you'd expect - its not a dog but not real quick either. Suspension is good too - not comparable to a new sled but there's no surprise there - its 5 years old. I never played around with clutching or performance mods. IMO, its not worth it with this kind of sled. It's dependable and fun to toss around on the trails (it feels "light").
The only mod I would have done to it (but never got around to it) is to replace the stock skis. They're find when the trails are softer on top, but if they're hard and have a lot of previous ski ruts, they stink - they dart a lot.
I've got one and I bought it new , have 5200 miles so far its been excellent . I still have 140 psi in both pistons . I've recommend useing synthetic injector oil [bombys xp]the motor likes this oil and I think you get more hp out of it.
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