The fastest factory production four wheeler is the polaris xp 1000 four stroke all the four wheel drive four wheelers are faster than two wheel drive two strokes look it up

 

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Let the debate begin.

 

how fast are the big 4 strokes ? true radar only! the lt500 Suzuki was radared at 80m.p.h. , bone stock, not even broke in, at 3000 ft altitude, at el mirage dry lake . altitude kills 3% h.p. per 1000 ft. search dirt wheels 1987 or 88 , can`t remember. my 89 was faster than that for some reason, I could play w/ other stock ones ! and, the banshees wouldn`t touch it until they had some serious $ spent on them. when mine was piped and jetted, it would run off and hide from my buddies piped and jetted (toomy kit) banshee. but spend the $ on the banshee, and you could take it farther than the single cyl. 500. no brag, just fact!

 

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Wouldn't surprise me, as I posted on that thread, I've been 88 mph on a 1000 turbo RZR. BTW everyone told me that my 400 Polaris Sportsman 2 stroke would outrun my old Arctic Cat 500 4 stroke manual shift. Put a guy that weighed 100 lbs less on the Polaris and when we hit 40 , I had already caught him.