Nitrous Express 55070-12 Domestic/Gasoline RNC Nitrous Kit with 12 lb Bottle

The Nitrous Express 55070-12 is a complete Restricted Nitrous Class (RNC) Nitrous Oxide Injection System Kit designed for serious professional racers competing under jet-size-restricted class rules. This system is engineered to extract every possible molecule of nitrous through a given jet size by delivering the densest possible liquid nitrous charge to the engine.

At the heart of this kit is a CNC billet nitrous plate featuring enlarged nitrous passages for maximum flow efficiency. Paired with a Lightning 250 nitrous solenoid (0.250" orifice) and a high-flow DF5 bottle valve (0.500" orifice), the system ensures an exceptionally dense, liquid-state nitrous delivery — a critical advantage when jet size is the limiting factor in competition.

Key Features:

• CNC billet nitrous plate with enlarged nitrous passages for superior flow
• Lightning 250 nitrous solenoid with 0.250" orifice for precise nitrous delivery
• DF5 bottle valve with 0.500" orifice for high-volume nitrous flow
• 8AN feed line for efficient fuel and nitrous supply
• Lightning series fuel solenoid for matched fuel delivery
• Stainless steel hard lines connecting solenoids to the plate
• Stainless steel bottle brackets for secure 12 lb bottle mounting
• Heavy-duty relay and switches included
• Complete hardware package: every nut, bolt, and electrical connector needed for installation
• Includes 12 lb nitrous bottle

The RNC configuration is purpose-built to maximize nitrous density and flow within restricted class rules, giving competitive racers a legal edge over conventional nitrous systems. Everything required for a complete installation is included in the kit, making it an ideal choice for racers who demand professional-grade performance right out of the box.