the 200-01 sx500r was geard down 1 tooth on top compared to the vmax 500's. best i got out of mine before re-gearing was 80mph with clutching set right and 8 mpg was a long slow ride. after the regear it averaged 9-10mpg and hit 95mph. i always needed gas before my brother's viper.
i remeber the ride that made me decide to upgrade to a 4 stroke. out with 01 srx700, 2000 sx700r piped with aeens, and an 700 tripple polaris. we all started full and drove the same trails at the same speed. the tripples all filled once. i had to fill twice to make the same distance. they where all under 1/4 tank and i still only had 1/2 tank left.
to note up untill 2010, you could still get the venture 600 tripple here in canada.