Nitrous Express Nitrous Oxide Injection System Kit

Nitrous Express Nitrous Oxide Injection System Kits: Engineering Built for Power

Nitrous Express (NX) has been one of the most respected names in forced induction since its founding in 1996. Unlike competitors who adapted existing designs, Nitrous Express started from a blank sheet of paper — engineering every component of their nitrous oxide injection system kits with performance-first thinking built in from the ground up. The result is a lineup of complete kits that deliver real, measurable power gains right out of the box, without the need for aftermarket modifications to make the system competitive.

What Sets NX Injection System Kits Apart

At the heart of every Nitrous Express injection system kit is a suite of proprietary technologies that separate their products from the competition. The Phase 3 spraybarless plate design is a prime example: these nitrous system kits feature plates that are CNC machined from a single piece of 6061 billet aluminum, delivering tightly controlled nitrous and fuel distribution with no spray bars to sag, split, block airflow, or fail under stress. The internal passages are precision-machined to ensure superior cylinder-to-cylinder distribution — translating directly into more reliable horsepower.

The Lightning Series solenoids included in NX kits are another standout feature. Their improved flow path allows nitrous and fuel to enter above the seat and exit out the bottom, a design that NX spent countless hours refining on the flow bench to minimize turbulence and nitrous boiling. Lightning solenoids feature CNC aluminum bodies with carbon fiber cans for weight savings, and NX backs them with a Lifetime Limited Warranty — a remarkable commitment in the performance parts industry. Standard Nitrous Express branded products carry a one-year limited warranty against defects in workmanship and materials.

The Lightning 500 bottle valve, often included in complete system kits, uses a nearly straight-line flow path with only a single 45-degree turn to the discharge point — eliminating the power-robbing 90-degree bends found in conventional valves. It is recommended for nitrous systems up to 2,000 nitrous horsepower and accepts supply lines up to 10AN for maximum flow.

EFI and Carbureted Applications

Nitrous Express offers injection system kits for a wide variety of engine types. Their EFI nitrous system kits are engineered specifically for fuel-injected engines, featuring direct plug-in fuel line adapters for simplified installation and billet plates that bolt between the throttle body and intake manifold without major engine modification. For traditional carbureted builds, the Pro Power conventional plate systems — such as the Phase 3 series — cover Holley 4150-style applications and support power levels from 100 to 500 wheel horsepower with a 10 lb. bottle included.

Whether you are building a weekend street/strip machine or a dedicated drag car, Nitrous Express injection system kits provide the engineering integrity and complete hardware to get you to the finish line faster. Explore the full Nitrous Express brand lineup or browse all nitrous oxide injection system kits to find the right system for your application.