Nitrous Express Nitrous Oxide Injection System Kit - NX-20421-15 is a superior system designed for high-performance vehicles and aims to increase engine efficiency and power. Thanks to nitrogen oxide injection, it provides additional oxygen to the engine's combustion chamber, creating more powerful explosions and thus significantly increasing engine performance. This system, which is an ideal solution especially for racing and performance vehicles, operates in a safe and controlled manner thanks to its optimized design. The NX-20421-15 model has a user-friendly structure with components that offer ease of assembly. Thanks to being made of high quality materials, it provides durability and long-lasting use. It's the perfect choice for professional racers and performance enthusiasts alike. For those who want to increase engine power and torque, the Nitrous Express Nitrous Oxide Injection System Kit offers a reliable and effective solution. Proton Series Nitro Systems combine performance, durability and value in a compact and easy-to-install module. Proton Systems feature high-quality solenoids made in the USA that can produce 150 horsepower. The black anodized aluminum body not only looks great, it also draws heat from the solenoids, providing extreme durability. Proton Plus System includes Jetting for 35hp, 50hp, 75hp, 100hp, 125hp and 150hp. The system includes a 15lb nitrous bottle, aluminum high flow Lightning 45' bottle valve, stainless bottle brackets, a single Shark nozzle, nozzle adapter, stainless braided nozzle lines, extra long braided stainless feed line, stainless fuel line, main arming switch, full throttle switch, 40 amp relay, relay wiring harness and every nut, bolt and electrical connector necessary to complete the assembly. Suitable for all vehicles with electronic fuel injection and single throttle body.