Nitrous Express 4150 Assassin Plate Stage 6 Alcohol 50-300HP (12lb Bottle)

If you're looking to significantly boost your engine's power output for racing or performance driving, the Nitrous Express 4150 Assassin Plate system is a serious contender. This system is designed to inject a precise mixture of nitrous oxide and fuel directly into your intake manifold, creating a substantial horsepower increase. It's particularly well-suited for applications using a 4150-style carburetor flange, common on many performance-oriented V8 engines.

What sets the Assassin plate apart is its advanced design. Instead of traditional spray bars, it features a CNC-machined plate with integrated nitrous and fuel discharge ports along the outer perimeter. This unique setup creates a perimeter spray pattern, ensuring a more even distribution of the nitrous-fuel mixture across the intake manifold runners. This improved distribution is especially beneficial for single-plane manifolds, helping to overcome common issues like uneven cylinder filling found in many small and big block Ford engines. The result is better atomization and a more consistent power delivery across all cylinders, without the worry of spray bars sagging or obstructing airflow.

This Stage 6 Alcohol version is capable of supporting a wide range of horsepower gains, from 50 to 300 HP, and includes a 12lb bottle to get you started. It's important to note that this system is not CARB approved and cannot be shipped to California. Proper installation and tuning are crucial for safety and optimal performance, so always refer to the manufacturer's instructions and consider consulting with a professional if you're new to nitrous systems.