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An RNC Nitrous Plate Kit Built to Push Past 15lb Bottle Limits
The NEX55040-15 is a Nitrous Express 4150 Gasoline RNC (Restricted Nitrous Class) plate kit that ships with a 15 lb aluminum nitrous bottle for extended run time between refills, giving racers and street cars a complete jump plate system without sourcing bottles and hardware separately.
Key Features
- RNC (Restricted Nitrous Class) high flow billet plate design
- Lightning 375 nitrous solenoid with .375 inch orifice
- Lightning fuel solenoid with .187 inch orifice
- 8AN nitrous supply line
- Lightning 500 bottle valve for maximum flow
- WOT activation switch and master arming switch included
- Stainless steel bottle brackets
- Jetting included for 300 to 650 horsepower
- 15 lb aluminum nitrous bottle included
Specifications
| Detail | Value |
|---|---|
| MPN | 55040-15 |
| UPC | UPC available upon request |
| Throttle Body | 4150 Flange |
| Fuel Type | Gasoline |
| Bottle Configuration | 15lb Bottle |
| Horsepower Range | 300 to 650 HP |
| Solenoid Series | Lightning |
What's Included
- 1x CNC billet 4150 nitrous plate
- Lightning 375 nitrous solenoid and Lightning fuel solenoid
- 8AN nitrous feed line
- WOT activation switch and master arming switch
- Stainless steel mounting brackets
- Jetting for 300 to 650 horsepower
- 15 lb aluminum nitrous bottle
About Nitrous Express
Nitrous Express has spent decades building nitrous oxide systems and components for street and race applications, backing its hardware with in-house engineering and testing rather than relying on generic fittings.
FAQ
What is the 55040-15?The 55040-15 is a Nitrous Express 4150 Gasoline RNC nitrous plate kit designed for restricted nitrous class racing, shipping complete with a 15 lb aluminum nitrous bottle.
What does RNC mean on this kit?RNC stands for Restricted Nitrous Class, a racing rule set that limits solenoid orifice size. This kit uses Lightning 375 and Lightning fuel solenoids sized to meet those restrictions while maximizing flow.
What horsepower range does this kit support?The kit includes jetting for 300 to 650 horsepower depending on tune and fuel setup.
Why choose the 15lb bottle version over the 10lb or no-bottle versions?The 15 lb bottle holds more nitrous, giving longer run time between refills for racers who make repeated passes without access to a fill station.
Is this kit legal for street use?Nitrous oxide injection is not CARB legal and cannot be shipped to or used on emissions controlled vehicles in California.
What is the warranty on the Lightning solenoids?Lightning series solenoids carry a lifetime limited warranty from Nitrous Express, while the remainder of the kit carries a 1 year limited warranty.
Do I need a separate arming switch?No, this kit includes both a WOT activation switch and a master arming switch as part of the complete system.
Does this kit work with a carbureted or EFI engine?This is a plate system designed for 4150 flange applications and is commonly used on carbureted setups, though EFI applications with a compatible throttle body can also use plate style nitrous.
Install Instructions
- Mount the nitrous plate between the carburetor and intake manifold using the supplied gasket set.
- Install the nitrous and fuel solenoids and route the 8AN supply line from the bottle valve.
- Mount the 15 lb bottle using the stainless brackets in a secure location within the vehicle.
- Wire the WOT activation switch and master arming switch per the included instructions.
- Select the appropriate jets for your target horsepower before first use.
Prop 65 Warning
WARNING: This product can expose you to nickel, which is known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov.
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