This motor doesn't require high performance upgrades to smoke nearly 2-stroke all around. With its stock very low profile head, speed carb, major bore exhaust, and 80cc crank set up, this engine receives a similar speed as sup'ed up 66cc's- if no more! ✓ For a longer time Trip Moments https://bike-engines-explained50087.blog-a-story.com/15929280/the-best-side-of-engine-bike-oil