NOS Nitrous Oxide Purge Kit

NOS Nitrous Oxide Purge Kits: Function Meets Spectacle

When it comes to nitrous oxide systems, few names carry the weight of NOS (Nitrous Oxide Systems). Founded in the late 1970s by two racers who refined nitrous oxide injection into a reliable science, NOS quickly became the benchmark for safe, effective performance enhancement. Their purge kits are a natural extension of that legacy — engineered to ensure your nitrous system performs at its absolute best, every single time you stage at the line.

Why a Purge Kit Matters

Before diving into what NOS offers, it helps to understand the role of a purge kit. Nitrous oxide purge kits are designed to release trapped air and gaseous nitrous from the feed lines prior to activation. This seemingly simple step is critical: without purging, your system may deliver an inconsistent shot of vapor rather than dense liquid nitrous, robbing you of power and repeatability right when it matters most. Purging ensures that the solenoid inlet sees liquid nitrous at maximum density the instant the system fires.

The NOS Ntimidator LED Purge Kit Lineup

NOS has taken the functional purge kit and elevated it with the Ntimidator™ Illuminated LED Purge Kit line — arguably the most recognizable purge kit in the performance world. These kits use five bright blue LEDs to illuminate a dramatic 4-foot plume of released nitrous, creating a visual signature that is as much a statement as it is a performance tool.

• Ntimidator Dual LED Purge Kit: Features twin outlets and dual blue LED illumination, designed for use with existing -4 AN nitrous feed lines. Ideal for enthusiasts who want maximum visual impact alongside full system functionality.
• Ntimidator Show Purge Kit (with 5 lb Bottle): A self-contained show version that pairs a 5 lb bottle with the Ntimidator hardware — no existing nitrous system required. Perfect for car shows and nighttime events where you want the look without a full system install.
• Mainline Purge Systems (-4 AN and -6 AN): For the racer focused purely on performance, NOS offers non-illuminated mainline purge systems in both -4 AN and -6 AN configurations, complete with purge solenoid, fittings, and stainless tubing. These kits prioritize consistent nitrous delivery over visual flair.
• LED Replacement/Upgrade Kit: Already running an Ntimidator purge kit? NOS offers a dedicated blue LED replacement so you can refresh or upgrade the lighting element without replacing the entire assembly.

Built to NOS Standards

Every NOS purge kit is manufactured from high-quality materials to meet or exceed factory performance standards. Installation is designed to require only basic hand tools, and the kits are universally compatible with a wide range of vehicle types — from street-driven builds to dedicated drag cars. This commitment to accessible engineering has defined NOS since the brand helped power the first 200 mph run and the first 6-second elapsed time in Pro Mod drag racing history.

Whether you're chasing consistency on the track or turning heads under the night sky at a car meet, NOS purge kits deliver the reliability and identity that only the original nitrous pioneer can offer. Explore the full NOS brand catalog or browse all Nitrous Oxide Purge Kits to find the right setup for your build.