I attended a race last Sunday at Montrose MX facility here in NC and watched a friend's 8 yr old som take two 3rd place finishes on his 04 Extreme 100.
This was his first time racing. The track is really sandy, banked corners, and overall the track is pretty challenging for the very young riders on quads. The Extreme has good power and stock 2 weeks old handled the track real nice.
Nothin like seeing a the young riders holding a trophy that's 2/3rds their height either!
Pete