Nitrous Express Nitrous Oxide Injector Plate

Nitrous Express Nitrous Oxide Injector Plates: Race-Engineered Delivery

When it comes to plate-style nitrous delivery, few names carry the credibility of Nitrous Express (NX). Founded in 1996 by racer and nitrous pioneer Mike Wood, NX was built on a straightforward premise: engineer every component from the ground up, dyno-verify every horsepower claim, and never compromise on quality. That philosophy flows directly into their lineup of nitrous oxide injector plates — bolt-on solutions that turn a standard induction system into a genuine power-adding platform.

What Makes NX Injector Plates Different

A nitrous oxide injector plate is a precisely machined spacer that mounts between the carburetor or throttle body and the intake manifold. It uses internal passages and metered jets to atomize and distribute nitrous oxide — and, in wet systems, fuel — evenly across all cylinders before the charge enters the engine. The quality of that distribution directly determines how much power you gain and how reliably the engine survives the added cylinder pressure.

Nitrous Express approaches this with the same obsessive attention to flow dynamics that defines their entire product line. The company has spent countless hours on the flow bench eliminating turbulence points throughout its systems — turbulence causes nitrous to boil prematurely from a liquid into a gas, which dilutes the charge and costs power. The result is injector plates engineered to deliver the densest, most consistent nitrous charge possible at the point of discharge.

NX Injector Plate Product Lines

The NX catalog covers a wide range of induction configurations, giving builders options regardless of whether they are running a classic carburetor or a modern EFI throttle body:

• Pro Power Plate (NP504): Designed for Holley 4150-style 4-barrel carburetors, this black-anodized aluminum plate supports a wide power window — from 100 to 500 hp — making it equally at home on a street/strip muscle car or a dedicated drag vehicle. It is offered as a plate-and-jet-fittings assembly, allowing builders to pair it with NX Lightning solenoids for a complete wet system.
• LS Plate Conversion: NX offers a 90mm aluminum plate in black anodized finish specifically for GM LS applications, addressing the growing popularity of LS swaps and late-model LS-powered platforms.
• Stage 6 Nitrous Plate: Built around a 4150 flange crossbar design in wet configuration, the Stage 6 plate targets higher-horsepower builds that demand both flow capacity and precise mixture distribution.
• Direct Port Injection Plate (SNO-40069-2): Backed by a 5-year warranty and manufactured in the USA, this plate is purpose-built for direct port applications and reflects NX's commitment to quality construction.

Built and Proven in America

Every Nitrous Express injector plate is manufactured using CNC-machined aluminum and finished with a durable black anodized coating for corrosion resistance and long service life. NX's insistence that all horsepower claims be dyno-proven at the wheel means you can trust the power ratings printed on the box — they are not marketing approximations. As NX states plainly: all components must be tested and proven before they leave the facility.

Whether you are building a carbureted bracket racer, an LS-swapped street machine, or a dedicated drag car, Nitrous Express injector plates deliver the kind of engineered precision that separates predictable power gains from expensive engine failures. Explore the full Nitrous Express brand catalog or browse all nitrous oxide injector plates to find the right plate for your application.