My Account
My Garage
Shopping Cart
MY GARAGE Select Vehicle
MY GARAGE

Nitrous Express 67540-15 4150 Assassin Nitrous Plate System 100-500HP with 15lb Bottle

Manufacturer

Part Number

67540-15
Sale Price

$1,356.70

In Stock (10+)

delivery box

Usually delivered within 2 days

free shipping

FREE SHIPPING

Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Nitrous Express 4150 Assassin Plate System is a high-performance nitrous oxide injection solution designed for carbureted applications with 4150-style flanges. This Pro Power kit is engineered to deliver between 100 and 500 horsepower gains, making it ideal for street/strip vehicles and serious performance builds.

Key Features:

  • Direct-port nitrous plate design fits between carburetor and intake manifold
  • Adjustable power range from 100 to 500 horsepower
  • Includes complete 15-pound capacity nitrous bottle
  • Precision-machined aluminum construction for optimal flow and durability
  • Pro Power configuration with staged jetting for progressive power delivery
  • Compatible with 4150-style carburetors (Holley, Demon, Quick Fuel, etc.)
  • Includes all necessary jets, lines, fittings, and hardware
  • Easy installation with comprehensive instructions

The Assassin Plate system offers a clean, hidden installation that maintains the stock appearance of your engine bay while delivering serious power on demand. The plate design ensures even distribution of nitrous and fuel across all cylinders for maximum performance and reliability.

Products specifications

Prop 65

WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

YOU ARE EXCELENT SO FAR

easy and efficient

Easy navigation through site, part number search works flawlessly

Great experience.

It was quick and easy to place the order for my 1996 Pontiac Firebird. I would recommend & use your online ordering system again.

Prompt delivery and satisfied experience

Άριστη εξυπηρέτηση!!! Μπράβο !!!!

GREAT PRICES!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy