Nitrous Express Billet Supercharger Lid Nitrous Kit

2015–2023 Dodge Demon, Challenger, Charger, Durango SRT Hellcat, Trackhawk & TRX 6.2L HEMI

Part #: 20972-12

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 kit replaces the factory supercharger lid with a billet aluminum lid that integrates a spraybar-less nitrous system, delivering a clean and efficient installation. By optimizing airflow and nitrous injection, it unlocks significant horsepower and torque gains, making it an ideal enhancement for enthusiasts seeking to maximize their vehicle’s performance potential.

Designed for seamless integration with the factory supercharger and intercooler system, this nitrous kit supercools the intake charge by injecting nitrous oxide and fuel directly into the supercharger’s air discharge. This results in denser, cooler air entering the engine, which improves combustion efficiency and power output without compromising reliability.

Key Features

This billet supercharger lid nitrous kit combines advanced engineering with practical design to deliver superior performance gains. Key features include:

• Spraybar-less nitrous system with CNC-machined fuel and nitrous passages integrated directly into the lid for precise and consistent spray patterns
• Optimized airflow design that maximizes air volume through the supercharger for improved engine breathing
• Injection of nitrous and fuel inline with the supercharger air discharge, ensuring even distribution of the mixture to each cylinder runner
• Supercooling effect on the intake charge by injecting nitrous into the pre-intercooled hot air discharge, enhancing intercooler efficiency
• Billet aluminum construction for superior strength, durability, and heat dissipation compared to factory plastic lids
• Direct bolt-on replacement for factory supercharger lid, requiring no permanent modifications
• Supports nitrous horsepower increases from 100 to 300 hp with a 12 lb carbon bottle setup
• Compatible with multiple Dodge SRT Hellcat platforms including Demon, Challenger, Charger, Durango, Trackhawk, and TRX

Construction & Design

The billet supercharger lid is crafted from high-grade billet aluminum, providing exceptional rigidity and thermal conductivity. This construction helps dissipate heat more effectively than the stock plastic lid, reducing intake air temperatures and improving overall performance. The CNC machining process ensures precise integration of the nitrous and fuel passages, eliminating the need for traditional spraybars and guaranteeing an optimal spray pattern every time.

The design focuses on maintaining factory fitment and appearance while enhancing the internal airflow dynamics. The lid’s internal channels are engineered to deliver nitrous and fuel directly into the supercharger’s air discharge, which is a critical area for maximizing the cooling and volumetric efficiency benefits of nitrous injection.

Performance & Sound

By injecting nitrous oxide and fuel directly into the supercharger’s discharge, this system significantly increases horsepower and torque output in a controlled and efficient manner. The supercooling effect reduces intake air temperatures, allowing the engine to safely produce more power without detonation. This upgrade enhances throttle response and acceleration, making it a popular choice for street and track enthusiasts looking to extract more performance from their Hellcat or Demon.

Installation & Fitment

The Nitrous Express Billet Supercharger Lid Nitrous Kit is designed for a straightforward, bolt-on installation that replaces the factory supercharger lid without requiring permanent modifications. Installation typically involves removing the stock lid, installing the billet lid with integrated nitrous passages, and connecting the nitrous and fuel supply lines. This kit fits all 2015–2023 Dodge 6.2L HEMI Hellcat, Demon, Challenger, Charger, Durango SRT, Trackhawk, and TRX models, ensuring broad compatibility across the lineup.

What's Included

• Billet supercharger lid with integrated nitrous and fuel passages
• 12 lb carbon nitrous bottle (front mount)
• Complete nitrous and fuel line fittings and hardware
• Installation instructions

Ideal For

This nitrous kit is ideal for Dodge Hellcat and Demon owners who want a reliable, high-performance nitrous injection system that integrates seamlessly with their factory supercharger setup. It is perfect for street performance enthusiasts, weekend racers, and anyone looking to add 100 to 300 horsepower with a clean, efficient, and well-engineered solution. The spraybar-less design appeals to those who value precision and consistency in nitrous delivery without the complexity of traditional spraybars.

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.