What is the horsepower range this kit can support?

This Nitrous Express kit comes with jetting that can support a wide range of power increases, from 50 horsepower up to 500 horsepower. You can select the appropriate jets based on your desired power output.

What makes the injection 'direct port style' without being a traditional direct port system?

Instead of a nozzle or spray bar inside the intake runner, this plate injects the nitrous and fuel mixture directly into each runner from the side. This achieves a similar effect of distributing the charge to each cylinder individually, but with a cleaner intake tract.

Does this kit come with everything needed for installation?

Yes, the system is designed to be a complete kit. It includes the billet aluminum plate, solenoids, stainless steel braided lines, wiring, switches, all necessary hardware, and a 15lb nitrous bottle with valve and brackets.

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Specifications

Brand: Nitrous Express
Part #: 20940-15
UPC: 653374975742

Nitrous Express Holley High Ram Plenum Nitrous Plate Kit w/15lb Bottle

Name: Nitrous Express Holley High Ram Plenum Nitrous Plate Kit w/15lb Bottle
Brand: Nitrous Express
SKU: nitrous-express-nitrous-express-holley-high-ram-plenum-nitrous-plate-kit-w-15lb--t14-339593
Price: 1917.89 USD
Availability: BackOrder

$1917.89

On Backorder

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Nitrous Express Holley Hi-Ram Plenum Nitrous Plate Kit w/15lb Bottle. Delivers direct port style nitrous injection without runner obstruction.

Key Features

Verified fitment for Holley Hi-Ram intake manifolds.
Billet aluminum plate with integrated internal passages for nitrous and fuel distribution.
Direct port style injection from the side of the runner, avoiding internal obstructions.
Single stage system with jetting for 50 to 500 horsepower.
Includes billet aluminum and carbon fiber Lightning Solenoids.
Comes with stainless steel braided lines, wiring, switches, and all necessary hardware.

This nitrous plate kit is designed to fit between the upper and lower intake manifold sections of Holley Hi-Ram manifolds. Always confirm compatibility with your specific intake setup.

⚠️ 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

If you're looking to add a significant power boost to your Holley Hi-Ram intake manifold, this Nitrous Express plate kit is a solid option. It bolts right between the upper and lower sections of your Hi-Ram, making for a clean installation. The unique design injects nitrous and fuel into each cylinder from the side of the runner, giving you direct port-style distribution without any flow-restricting nozzles or spray bars inside the intake runners themselves. This means a smoother flow path for both your air/fuel mixture and the nitrous charge.

The plate itself is machined from billet aluminum, with the internal passages milled directly into the material. This construction method eliminates concerns about spray bars breaking loose or spinning, which can be an issue with other designs. This system is configured as a single stage and comes with jetting options that can support anywhere from 50 to 500 horsepower, so you have a good range to tune with. It's designed to be a complete kit, including billet aluminum and carbon fiber Lightning Solenoids, stainless steel braided lines, all the necessary wiring, switches, and every single nut, bolt, and connector you'll need for the installation. The included 15lb bottle features a billet aluminum Lightning 500 bottle valve and stainless steel bottle brackets.

This kit is designed for maximum performance and ease of installation on Holley Hi-Ram manifolds. Remember 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.