Does this count?? 66cc's of 2 stroke fury!! Lightly modded, it'll do 45mph(verified by GPS and stationary traffic radar trailers). I can say that 45 on a bicycle certainly seems faster than 100 on a motorcycle! I've 'improved' on this bike for the last 5 years and it's very dependable ---- even took it to Illinois and did a 100 mile tour with a group of friends. (Yep, chain is off. Had just finished replacing the clutch shaft last year.)