What is the primary benefit of the billet aluminum supercharger lid?

The billet aluminum lid is precisely machined with integrated 1/8NPT ports. This allows for direct port style nitrous and fuel injection into each cylinder, providing a more controlled and effective power increase compared to other injection methods.

What is included with this Nitrous Express kit?

This kit includes the billet LT4 supercharger lid with integrated ports, a 15lb nitrous bottle, and the necessary jetting for 100 to 300WHP. The system is designed as a single-stage nitrous oxide injection system.

Can I add water/methanol injection to this system later?

Yes, the lid is designed with 1/8NPT ports that make it easy to add a direct port water/methanol injection system at a later time if you wish to further enhance your performance setup.

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Specifications

Brand: Nitrous Express
Part #: 20939-15
UPC: 653374976428

Nitrous Express Nitrous Kit w/Billet LT4 Supercharger Lid w/15lb Bottle

Name: Nitrous Express Nitrous Kit w/Billet LT4 Supercharger Lid w/15lb Bottle
Brand: Nitrous Express
SKU: nitrous-express-nitrous-express-nitrous-kit-w-billet-lt4-supercharger-lid-w-15lb-t14-339584
Price: 3085.94 USD
Availability: BackOrder

$3085.94

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Fits 2015-2019 Chevrolet Corvette. Nitrous Express Nitrous Kit w/Billet LT4 Supercharger Lid w/15lb Bottle. Direct port injection for improved performance.

Key Features

Fits 2015-2019 Chevrolet Corvette, 2016-2019 Cadillac CTS, and 2017-2020 Chevrolet Camaro.
Replaces the factory upper supercharger lid on GM LT4 superchargers.
Billet aluminum construction for a solid and durable component.
Features 1/8NPT ports machined directly into the lid for direct port style nitrous and fuel injection.
Includes a 15lb nitrous bottle.
Standard single-stage system with jetting for 100 to 300WHP.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

Starting with a solid piece of billet aluminum, this Nitrous Express kit features a custom-machined LT4 supercharger lid designed to replace the factory upper lid on GM LT4 supercharged engines. This isn't just a cosmetic upgrade; the lid has 1/8NPT ports machined directly into it, allowing for precise nitrous and fuel injection into each cylinder. This setup mimics a direct port system, distributing the nitrous and fuel right where it's needed for a more consistent and effective power boost.

The system comes standard as a single stage, with jetting options that can add anywhere from 100 to 300 horsepower, depending on your setup. Installation is designed to be quick and clean, integrating smoothly with your existing LT4 supercharger. The included 15lb bottle provides a good supply of nitrous for spirited driving or track days. Plus, the machined ports in the lid make it straightforward to add a water/methanol injection system later on if you decide to further enhance your setup.

This kit is a substantial upgrade for your LT4-powered vehicle, offering a significant power increase with a well-engineered injection system. It's important to note that this system is not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper setup and safety guidelines.