Between 65 and 70 depending on who you ask I own one and all I know is that whatever it is rated at is more than enough! Its about the same as a Polaris 850 OR Can m 800 But the Thundercat has way...
the top speed is 120 mph stock
The Artctic cat thunder cat is by far one of the fastest four wheelers ever made, with top speed of about 150 km/h (about 94 mph).
The arctic cat thindercat came out in 1997, I think.
i thought it was factory rated at 172hp