I picked up a ATV mag this week a person had made a 500 Sportmans the same weight as the Grizzly and was claiming that the Sportmans would out run the Grizzly, i have a grizzly i just dont think that a 500 could outrun a 660 anyway.....

 

uhh, no. Not going to happen with the 500.

 

I have a 500 Spportsman and a Grizzly both 2003 The Grizzly beyond a doubt is faster but i'd never put the sportsman down it is a great bike and like it as mush as the Grizzly Here in Arizona alot of mountain riding with steep grades wouldn't believe what both have got me in and out of

 

yeah, its a good capable bike, but in reference to the question, there's no way its outrunning a 660.