To purchase the Atomization Valve, please use either BUY NOW button below. U.S. Patent #9,784,145 B2 A Set of 2 Intake Valves for Harley Davidson ($100 + $20 shipping) A Set of 8 Intake Valves for Chevrolet ($360 + $20 shipping) Disclaimer: Valves must be professionally installed. Valves must be properly seated. Tuning is required for optimum results in every different engine. Not recommended for a wore out engine.