Otto Man;303796 wrote: I have no idea what the hell qualifies as a "thunderbike", but it sounds bad ass and I want to race in that class.
THUNDERBIKE (Amateur and Expert)
Single cylinder, Unlimited displacement
Two stroke, Unlimited displacement
Twin cylinder, air cooled, push-rod, Unlimited displacement
Twin cylinder, liquid cooled, 3 or less valves per cylinder,
Unlimited displacement
Twin cylinder, liquid cooled, 4 valve per cylinder, up to 750cc
Twin cylinder, liquid cooled, non-desmodromic valves, 4 valve per
cylinder, up to 800cc
Three cylinder, air cooled, non-fuel injected, up to 1200cc
Four cylinder, air-cooled, up to 1200cc
Four cylinder, liquid cooled, 1990 to 1992 model year, up to 650cc
Four cylinder, liquid cooled (oil or water), pre-1990 model year, up to
860cc
All air-cooled, 2-valve, unlimited displacement
sv 650 does well it this class. it one of the five classes i will be running!