This translates to lower torque on The underside end from the engine power curve but comparable top rated speed on the top finish. 80cc/66cc 2-Stroke Motorized Bicycle Kits: Powerful engine for faster speeds. Suitable with several bike types. Highly praised by customers for power. 【Easy to setup】Motorized bike package 100cc. https://bikeengineoilchangekm28259.look4blog.com/73195171/trike-engines-an-overview