This motor doesn't will need high performance upgrades to smoke nearly 2-stroke about. With its stock very low profile head, speed carb, significant bore exhaust, and 80cc crank setup, this engine gets a similar speed as sup'ed up 66cc's- if not more! Most of the performance parts from GX200/ Predator https://jasperfwkyl.tusblogos.com/35242272/the-smart-trick-of-predator-301-mini-bike-that-no-one-is-discussing