CryO2 is a revolutionary product designed to reduce air and fuel temperatures thus creating power. Through the science of aerodynamics and cryogenics, Design Engineering has developed a system to harness the cryogenic properties of liquid CO2 to lower the intake charge temperature by up to 50°F. The system is modular and can be easily expanded. The CryO2 system provides two methods for cooling the air charge and one for cooling fuel, all utilizing the same burst of liquid CO2. CO2 is readily available at any welding or medical supply locations or where paintball guns are charged. The Power of COOL - Welcome to the future of power. CryO2 Tank Nut/Nipple to Male 4AN Assembly