What horsepower levels can this system support?

This Stage 6 system includes jetting for a wide range of horsepower increases, from 50 HP up to 300 HP. You can select the appropriate jets based on your desired power output.

What components are included with this nitrous plate system?

The kit includes the Covert Crossbar plate, a custom solenoid bracket, billet aluminum Y fittings, braided stainless steel lines, nickel-plated fittings, a Lightning 45 bottle valve, a wide open throttle switch, a master arming switch, a 40 Amp relay, and a relay harness. It is designed for 4150 flange manifolds.

Does this system come with a nitrous bottle?

No, this specific kit, part number 63071-00, is sold without a nitrous bottle. You will need to source a compatible bottle separately.

Specifications

Brand: Nitrous Express
Part #: 63071-00
UPC: 653374984966

Nitrous Express 4500 Covert Crossbar Plate System Stage 6 50-300HP (w/o Bottle)

Name: Nitrous Express 4500 Covert Crossbar Plate System Stage 6 50-300HP (w/o Bottle)
Brand: Nitrous Express
SKU: nitrous-express-nitrous-express-4500-covert-crossbar-plate-system-stage-6-50-300-t14-831419
Price: 1139.89 USD
Availability: BackOrder

$1139.89

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 4500 Covert Crossbar Plate System Stage 6 50-300HP (w/o Bottle) Injection System Kit

Key Features

This is a Nitrous Express 4500 Covert Crossbar Plate System, Stage 6, designed for 50-300HP increases.
The CNC machined design eliminates round spray bars for improved atomization and cylinder distribution.
It is designed for 4150 flange manifolds and includes jetting for 50, 100, 150, 200, 250, and 300HP.
The system includes a custom solenoid bracket, billet aluminum Y fittings, and braided stainless solenoid to plate lines.
Nickel plated fittings and a Lightning 45 bottle valve are included for durability and flow.
Comes with a wide open throttle switch, master arming switch, 40 Amp relay, and relay harness.

⚠️ 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

The CNC machined design of this Nitrous Express Covert Crossbar Plate System eliminates traditional spray bars, which can sag, rotate, or disrupt airflow. This updated approach results in excellent atomization and better cylinder distribution for your engine. This system is designed for 4150 flange manifolds and offers jetting for 50, 100, 150, 200, 250, and 300 horsepower increases.

This Stage 6 system goes beyond a standard crossbar kit, including a custom solenoid bracket, billet aluminum Y fittings, and braided stainless steel lines connecting the solenoid to the plate. It also features nickel-plated fittings for durability and a clean look. For safety and control, it comes with a wide-open throttle switch, a master arming switch, a 40 Amp relay, and the necessary relay harness. The integrated gauge ports and improved flow path with only one 45-degree turn contribute to its efficient operation.

The included Lightning 45 bottle valve is a notable upgrade, weighing nearly a pound less than older brass valves while maintaining excellent flow and a great appearance. While this kit is designed for significant power gains, please note it is not CARB approved and cannot be shipped to California. It is recommended to consult the manufacturer's installation instructions for proper setup and any additional components you might need.