I had the above-pictured bike, a Suzuki MT50 "trailhopper" when I was 12 years old. I think that it cost $325, which was serious bucks compared to the average lawn-mower engine powered minibike that was common back then. It had a 50cc two-stroke with oil injection which put out an entire 3 horsepower. Top speed was just 35, but it was a lot of fun.