NOS Multi-Fit Nitrous Oxide Injection System

The NOS Multi-Fit Nitrous Oxide Injection System is the go-to wet nitrous solution when a vehicle-specific NOS kit isn't available. Engineered for sequential firing, multipoint fuel injection engines, this product line brings race-proven nitrous technology to a broad range of EFI applications — making it one of the most versatile nitrous systems on the market. As the original pioneers of nitrous oxide injection, NOS has been the most trusted name in nitrous performance for decades, powering more racers than any other brand.

The wet-type injection design simultaneously delivers nitrous oxide and supplemental fuel, maintaining safe air-fuel ratios under boost. This makes the Multi-Fit line especially well-suited for turbocharged and supercharged engines, where increased air velocity and forced-induction heat demand precise fuel enrichment for safe, repeatable power gains. Every kit is thoroughly dyno-tested across multiple vehicles before release to ensure consistent, reliable performance straight out of the box.

Key Features:

• Wet-type nitrous injection engineered for safe, consistent power delivery across a wide range of EFI configurations
• Exclusive NOS "Soft-Plume" Fogger nozzle in stainless steel for superior atomization and precise nitrous/fuel distribution
• Adjustable jetting allows tuning to specific horsepower targets — multiple jet sizes included per kit
• High-flow Hi-Flo bottle valve engineered for competition-grade performance
• Complete kits include bottle, bottle bracket, solenoids, plumbing hardware, and all necessary installation components
• Micro switch, safety relays, and all ancillary hardware included for a straightforward installation
• Industry-leading instruction manual designed to get the car off the lift and on the road or strip in minimal time
• Made in the USA by Holley's NOS brand — the most trusted name in nitrous performance

Whether building a budget-friendly street machine or a dedicated competition vehicle, the NOS Multi-Fit Nitrous Oxide Injection System delivers professional-grade nitrous technology with flexible installation options. Each variant in this product line comes complete with everything needed for a clean, functional installation.

Note: For off-road and competition use only. Not legal for use on California public highways. Always use premium-grade 92+ octane or unleaded racing fuel when operating a nitrous system.