This motor doesn't want high performance upgrades to smoke nearly two-stroke about. With its stock lower profile head, speed carb, huge bore exhaust, and 80cc crank set up, this engine will get the same speed as sup'ed up 66cc's- if not more! Many of the performance parts from GX200/ Predator https://griffineviyl.dreamyblogs.com/35326812/5-simple-statements-about-engine-cycle-explained