Nitrous Express Nitrous Oxide Plate

Nitrous Express Nitrous Oxide Plate Systems: Precision Engineering for Maximum Power

When it comes to nitrous oxide plate systems, few names carry the track-proven authority of Nitrous Express (NX). Founded with a singular focus on nitrous technology, NX has spent decades refining the science of nitrous delivery — and their plate system lineup is a direct reflection of that relentless engineering commitment. Whether you're bolting up a plate to a classic carbureted application or a modern EFI platform, Nitrous Express brings purpose-built innovation to every fit.

The Evolution of the NX Plate: From Spray Bars to Spraybarless

Nitrous Express has a deep history in the plate segment. The NX Stage 5 conventional nitrous plate, first released for 4150-series carburetors in 1996, featured brass tubes and a cast aluminum plate. Over time, the company pushed the technology further. NX developed products like the Gemini Twin plate, which brought stainless steel spray bars and a billet aluminum plate to the lineup. Today, the pinnacle of that evolution is the Assassin plate system. The Assassin eliminates spray bars entirely, using the perimeter of the plate for distribution — a design that removes every obstacle associated with conventional plate systems. The open plenum design ensures no restriction in the air path or plenum area under the carburetor or throttle body, giving builders with large single-blade throttle bodies a true high-flow plate option.

Spraybarless Technology Across Modern Platform Fitments

NX's Spraybarless technology isn't limited to race-only applications. Across their EFI plate lineup, the same core philosophy drives every design. The LT1 6.2L Corvette/Camaro nitrous plate system features Spraybarless technology for the ultimate in atomization and distribution, with the billet plate bolting between the throttle body and intake for quick, easy installation. The same is true for truck and sport-compact platforms — the GM 5.3L truck plate system also uses Spraybarless technology, with the billet plate sandwiched between the throttle body and intake. NX even offers dedicated fitments for performance-oriented vehicles like the Ford Mustang GT350 5.2L, the Dodge Hellcat/Demon, Ford EcoBoost four- and six-cylinder engines, and GM LS engines in both 90mm and 102mm throttle body configurations.

Smart Features Built Into Every Kit

What separates an NX plate system from a generic alternative is the completeness and intelligence of the included hardware. Solenoids are integrated directly into the plate for a super clean look, a direct-plug-in fuel line adapter eliminates the need to cut factory fuel lines, and a TPS Autolearn switch ensures nitrous only activates at wide-open throttle — automatically shutting off when you lift. On the solenoid side, NX Lightning solenoids feature an improved flow path that eliminates sharp turns and expansion areas in the nitrous flow path, keeping the nitrous in dense liquid form to make more power while using less nitrous. For systems that include a bottle, the Lightning 500 bottle valve features two integrated gauge ports, a 5/8-inch siphon tube, a large .500 orifice, and an improved flow path — flowing great while weighing nearly a full pound less than the old brass valve.

Wide Horsepower Range for Street and Strip

NX plate systems are designed to accommodate a broad range of power goals. The LS 102mm plate system, for example, includes jetting for 50, 100, 150, 200, 250, 300, 350, and 400 horsepower. The plate is also pre-machined with a second set of nitrous and fuel passages, making it easy to upgrade to a dual-stage system without replacing the core hardware. For carbureted builds, the 4150 Stage 6 Plate System covers 50–300 HP in a four-barrel gasoline application. Whether you're after a modest street bump or a serious strip setup, there's a purpose-matched NX plate for the job.