not possible, those are 2 stroke engines, the highest one can go is 50mph. Stock these go from 20-27mph depending on the weight, engine, and fuel type/mixture. From there anything u add like spindle size, 3rd bearing support, tuned pipe for torque, hp carburator, big bore kit, stuffed crank etc. you could gain up 50 with nitrous and with a good chance of seizing your engine.