A 50-shot nitrous kit should match your engine, fuel system, and installation plan—not just its advertised power range. These five options include wet and dry EFI systems with listed ranges that include 50 horsepower. The Nitrous Express Sport Compact kits are suited to buyers seeking a compact, lower-range setup; the Proton Plus and MainLine cover broader output ranges; and the Cold Fusion kit is aimed at newer single-throttle-body vehicles. Confirm that the kit includes the correct components and setup instructions for your vehicle before purchase.
| Kit | Best For | Listed Output |
|---|---|---|
| Nitrous Express Proton Plus | Broad-range universal EFI setups | 35–150 HP |
| Nitrous Express MainLine | Non-TBI EFI vehicles | 50–150 WHP |
| NX Dual Nozzle Sport Compact | Sport compact builds and a 5 lb bottle | 35, 50, or 75 HP |
| NX All Sport Compact EFI | Single-nozzle EFI builds | 35, 50, or 75 HP |
| Cold Fusion Universal Dry Kit | Newer single-throttle-body vehicles | 50–125 HP |
Nitrous Express Proton Plus Wet EFI Kit
The Proton Plus is a universal EFI wet system with a listed output range of 35–150 HP and a 10 lb bottle. That broad range makes it a candidate for buyers who want a system whose advertised range includes a 50-horsepower setting, while leaving room for other output levels if the application supports them.
Best for: EFI owners looking for a wet kit with a 10 lb bottle and a wide stated output range. The product listing identifies model 20421-10 and package dimensions of 28 by 11 by 10 inches, useful details when checking storage and installation space.
Consider: The listing does not specify vehicle-specific fitment or which jets are included. Verify the correct configuration for your engine and fuel system before ordering.
Nitrous Express MainLine EFI System
The MainLine is a single nitrous system for non-TBI EFI vehicles. Its listed output range is 50–150 WHP, and it comes with a 10 lb bottle. The stated fitment covers non-TBI EFI vehicles from 1985 to the present, making this a more specifically described option than kits labeled universal EFI.
Best for: Buyers whose vehicle matches the stated non-TBI EFI application and who want a system beginning at 50 WHP. The listing also identifies a white bottle with chrome valve, stainless steel bottle brackets, and solenoids.
Consider: WHP refers to wheel horsepower, which is not necessarily directly comparable to an engine-horsepower rating. Confirm fitment and the intended output measurement with the manufacturer or installer.
NX Dual Nozzle Sport Compact Kit
This Nitrous Express Sport Compact kit is listed with 35-, 50-, and 75-HP options and a 5 lb bottle. Its output choices include the target 50-shot level, while the smaller stated bottle capacity distinguishes it from the two 10 lb bottle options in this list.
Best for: Sport compact buyers considering a lower-output system and a 5 lb bottle. It is a direct comparison choice for shoppers who want a listed 50-HP option rather than a broad range that starts below 50.
Consider: The supplied product details do not list vehicle-specific fitment or confirm which output components are included. Check the package contents and application requirements before selecting it.
NX All Sport Compact EFI Kit
The All Sport Compact kit is a single-nozzle EFI system listed at 35, 50, and 75 HP, with a 10 lb bottle. Nitrous Express highlights its billet aluminum and carbon fiber solenoids, patented Shark nozzle, and Lightning solenoids with a flow path designed to eliminate sharp turns and expansion areas.
Best for: EFI buyers seeking a single-nozzle Sport Compact kit with a stated 50-HP option and 10 lb bottle. The listed nozzle and solenoid details make it a useful choice to compare against the dual-nozzle Sport Compact kit.
Consider: The supplied information does not state specific vehicle fitment or identify included jets. Confirm that the system’s configuration matches the vehicle and intended use.
Cold Fusion Universal Dry Nitrous Kit
This dry kit is described for 1997-and-newer vehicles with one throttle body, including four-, six-, and eight-cylinder engines. Its adjustable output is listed at 50–125 HP, with up to 175 HP stated with tuning. The product says it integrates with the OEM EFI system using factory fuel injectors and does not require a fuel solenoid.
Best for: Buyers with a vehicle that meets the stated year and single-throttle-body criteria who want a dry system with adjustable output beginning at 50 HP.
Consider: The higher output claim depends on tuning, and the listing does not establish fitment for every vehicle in the broad application description. Confirm tuning needs and vehicle-specific requirements before installation.
Buying Guide: How To Choose A 50-Shot Nitrous Kit
Does the system need to be wet or dry?
A wet system supplies nitrous and additional fuel through its system components; a dry system relies on the vehicle’s fuel system. The products above identify the Proton Plus as wet and Cold Fusion as dry. Choose based on engine setup, fuel-system capacity, and qualified installation guidance rather than assuming either design is universally preferable.
Does the advertised output include a 50-shot setting?
Check whether the listing gives discrete options or a range. The Sport Compact kits list a 50-HP option, while the Proton Plus and MainLine list ranges that include 50. The MainLine uses WHP in its output description; do not assume that figure is identical to an engine-horsepower rating.
Will it fit the vehicle?
Compare the kit’s stated application with the vehicle’s fuel injection type, throttle-body arrangement, and model year. “Universal” does not confirm that every component will fit every vehicle. Ask the seller or an experienced installer about fitment, required parts, and included jetting.
What bottle size and tuning should you consider?
The listed options include 5 lb and 10 lb bottles. Choose a size that suits the available mounting space and intended use, and confirm bracket and installation requirements. Engine condition, fuel delivery, ignition setup, and tuning matter when choosing a nitrous output; have the complete combination checked before use.
Frequently Asked Questions
Which listed kits specifically offer a 50-HP option?
The Nitrous Express Dual Nozzle Sport Compact and All Sport Compact EFI kits list 35-, 50-, and 75-HP options.
Which kit is listed for non-TBI EFI vehicles?
The Nitrous Express MainLine is listed for non-TBI EFI vehicles from 1985 to the present.
Which listed kit has a 5 lb bottle?
The Nitrous Express Dual Nozzle Sport Compact kit is listed with a 5 lb bottle. The Proton Plus, MainLine, and All Sport Compact listings specify 10 lb bottles.
Is the Cold Fusion kit a wet system?
No. The product listing describes it as a dry nitrous kit that uses the vehicle’s factory fuel injectors and does not require a fuel solenoid.
Does a 50-shot kit fit every engine?
No. Fitment depends on the vehicle and engine configuration. Check the manufacturer’s application information and have the installation and tuning requirements verified for the specific vehicle.