well this 660 went 72 MPH and the only reason i backed out of it was because i was fixing to throw er into a sharp turn. 63 to fast???? ur kiddin right??

 

I hate to burst your buble but the Grizz wont go 72, stock that is. I(actualy my wife) have one and stock it will hit a displayed 65 but in reality it is closer to 59-60 mph. More than fast enough for that machine.

Now if you want speed take my DS for a spin. Stock it will hot the rev limiter in 5th gear at 75mph. I put 2 inch taller tires on the back and it would still pull to the rev limmiter in fifth. I found a table on the net once that claimed at 7700 RPM in fifth with 22 inch tires with stock DS gearing was good for around 82mph. I then put a 1 tooth smaller sprocket on the front so my top speed should be back to around 75. Yes thats fast enough, for me anyhow.

 

I don't think you will have much problem, it might sputter a little if you are in the throttle hard. just remove your air box lid that should take care of it.

 

Mine tops out at 48 mph. With the mudbug mud tires it is plenty fast. Kind of hard to keep straight.
Thanks for all the info. I think I will just go out there and worry about if I have problems.

 

oh did i not say it was down hill ?? and sorry to burst ur bubble but it was goin 72. i tried takin the corner that fast but then the front end started shakin real bad so i let out of it real quick.... that would have been quite the wreck