NOS Big Shot Wet Nitrous Oxide Injection System

The NOS Big Shot is a professional-grade wet nitrous oxide injection system engineered for serious performance enthusiasts and competition racers who demand maximum, repeatable power gains. Built by Nitrous Oxide Systems (NOS) — the pioneering name in nitrous since the late 1970s — the Big Shot line carries a race-proven legacy that includes landmark records in NMCA competition, all achieved on NOS systems.

At the heart of every Big Shot system is NOS's signature fogging plate technology — a precision-machined injector plate featuring a unique spray bar with precisely positioned micro-orifices. This design atomizes the nitrous and supplemental fuel mixture at a far finer level than conventional plate systems, delivering superior distribution throughout the intake tract and consistent, repeatable power run after run.

As a wet system, the Big Shot injects both nitrous oxide and supplemental fuel simultaneously, maintaining safe and controlled air-fuel ratios under nitrous activation — protecting engine components while maximizing power output. Power output is easily adjusted by swapping fuel and nitrous jets, allowing precise calibration across a wide range of engine builds and power goals.

Key Features:

• Wet system design — simultaneous nitrous and fuel injection maintains proper air-fuel ratios and helps safeguard engine components under elevated cylinder pressures
• Precision fogging plate injector — multi-hole spray bar design provides superior atomization and mixture distribution versus conventional plate systems
• Jet-adjustable power output — easily retuned by swapping fuel and nitrous jets for precise calibration across a wide range of engine configurations
• High-flow solenoids — large-capacity solenoids deliver rapid, consistent nitrous and fuel flow on demand
• Complete kit contents — systems include the injector plate, solenoids, nitrous feed line, jets, filters, fittings, brackets, mounting hardware, and detailed installation instructions
• Multiple configurations available — single-stage variants provide straightforward, high-output nitrous delivery; dual-stage systems feature two independent solenoid sets for progressive power activation and improved traction management
• Race-proven heritage — the Big Shot platform has set landmark records in NMCA competition and has powered some of the quickest street and race vehicles ever recorded on a single plate system

The Big Shot product line is offered in multiple configurations to suit a variety of induction setups and power targets. Dual-stage variants allow power to be added progressively across two activation events, giving the driver traction-management control critical for competition launches. Select the configuration that best matches your induction setup and power goals — individual product listings include specific kit contents and power ratings.

Important Notice: Big Shot systems are designed for use on extensively modified engines intended for closed-course competition use only. This product is legal for sale and use only on uncontrolled (non-emissions-controlled) vehicles or vehicles used exclusively for closed competition racing. Forged internal engine components are strongly recommended due to the elevated cylinder pressures generated during nitrous operation. A high-flow fuel pump capable of meeting system fuel demands is required for proper operation.