Nitrous Express Billet Supercharger Lid Nitrous Kit

Dodge Challenger / Charger 15-21 6.2L Hellcat

Part #: 20972-05

Overview

The Nitrous Express Billet Supercharger Lid Nitrous Kit is a precision-engineered upgrade designed specifically for Dodge 6.2L HEMI Hellcat and Demon models from 2015 through 2023. This billet aluminum supercharger lid replaces the factory lid to provide a seamless, clean installation while dramatically enhancing airflow and nitrous delivery. Ideal for enthusiasts seeking a reliable and efficient method to boost horsepower and torque, this kit integrates nitrous and water/methanol injection passages directly into the lid for optimal performance gains.

By injecting nitrous oxide and fuel directly into the supercharger’s air discharge, this system super-cools the intake charge, increasing air density and improving flow through the factory intercoolers. The result is a significant power increase without compromising drivability or requiring extensive modifications.

Key Features

This billet supercharger lid nitrous kit incorporates advanced design elements to maximize power and reliability:

• CNC-machined billet aluminum construction for superior strength and durability
• Spraybar-less nitrous system with integrated nitrous and fuel passages for even distribution
• Improved airflow design to maximize supercharger efficiency and boost response
• Direct injection of nitrous and fuel into the supercharger air discharge for effective charge cooling
• Compatible with 5 lb nitrous bottles, supporting power increases from 100 to 300 horsepower
• Designed specifically for 2015–2023 Dodge Hellcat, Demon, Charger, Challenger, Durango SRT, Trackhawk, and TRX 6.2L HEMI engines
• Maintains factory intercooler efficiency by super-cooling the intake charge
• Quick and clean bolt-on installation with no spraybar plumbing required

Construction & Design

The billet supercharger lid is crafted from high-grade aluminum using precision CNC machining to ensure exact fitment and optimal airflow characteristics. The integrated nitrous and fuel passages are machined directly into the lid, eliminating the need for external spraybars and reducing potential leak points. This design guarantees a consistent and perfectly positioned spray pattern every time, enhancing both performance and reliability.

The lid’s improved airflow contours are engineered to complement the Hellcat and Demon supercharger’s air discharge, promoting maximum volumetric efficiency and supporting higher horsepower levels safely. The billet construction also offers superior heat dissipation compared to the factory plastic lid, contributing to more stable operating temperatures under boost.

Performance & Sound

By injecting nitrous oxide and fuel directly into the supercharger’s pre-intercooled hot air discharge, this system effectively super-cools the intake charge. This cooling effect increases air density, allowing the engine to ingest more oxygen-rich air and produce significantly more power. The spraybar-less design ensures an even distribution of nitrous and fuel to each cylinder, optimizing combustion and torque delivery.

While the primary focus is on power gains, the system maintains the factory supercharger sound characteristics without introducing unwanted noise or harshness, preserving the aggressive Hellcat exhaust note enthusiasts expect.

Installation & Fitment

The Nitrous Express Billet Supercharger Lid Nitrous Kit is designed for a straightforward, bolt-on installation that replaces the factory supercharger lid. No major modifications or custom fabrication are required, making it accessible for experienced DIYers and professional installers alike. The kit fits all 2015–2023 Dodge Hellcat, Demon, Charger, Challenger, Durango SRT, Trackhawk, and TRX models equipped with the 6.2L HEMI engine.

Installation involves removing the factory lid and replacing it with the billet unit, connecting the nitrous and fuel lines to the integrated passages. The spraybar-less design simplifies plumbing and reduces installation time compared to traditional nitrous systems.

What's Included

• Billet supercharger lid with integrated nitrous and fuel passages
• Hardware for mounting and installation
• Instructions for installation and system setup

Ideal For

This nitrous kit is ideal for Dodge Hellcat and Demon owners looking to safely and effectively increase horsepower and torque without extensive engine modifications. It suits street performance enthusiasts, drag racers, and track day drivers who want a reliable, clean, and efficient nitrous delivery system integrated directly into their supercharger setup. The kit’s spraybar-less design appeals to those seeking a low-maintenance, high-performance nitrous solution that maintains factory intercooler efficiency and drivability.

Nitrous Express (NX) manufactures high-performance nitrous oxide systems and components designed to add significant horsepower on-demand for street/strip and racing applications. With complete plate and direct-port style systems plus supporting solenoids and hardware, NX is built for tuners and racers who want controlled power gains—and the company also owns Snow Performance for water-methanol solutions.