Nitrous Express NX677 Assassin Plate Conversion 4500 Stage 6 Nitrous System 50-300HP

The Nitrous Express NX677 Assassin Plate Conversion is a Stage 6 single-stage nitrous oxide plate system designed for 4500 Dominator-style carburetor flanges, capable of delivering power gains from 50 to 300 horsepower. This conversion plate is engineered for racers who already own an Assassin plate system and want to upgrade or replace a core component with the 4500 flange configuration.

The Assassin plate features a CNC machined design that integrates the nitrous and fuel discharge ports directly into the outer perimeter of the plate. This revolutionary perimeter spray pattern delivers superior nitrous-fuel distribution and outstanding atomization compared to traditional spray bar designs. The elimination of spray bars removes the risk of sagging, splitting, blocked airflow, or physical damage — making this a truly next-generation nitrous plate solution.

Key Features:

• Designed for 4500 Dominator-style carburetor flange applications
• Stage 6 jetting supports 50, 100, 150, 200, 250, and 300HP power levels
• CNC machined perimeter spray ports for even nitrous and fuel atomization
• No spray bars — eliminates airflow restriction and potential spray bar failure
• Addresses distribution issues common on single-plane manifolds, including small and big block Ford applications
• Part Number: NX677 | UPC: 653374979504

The Nitrous Express Assassin Plate Conversion is the ideal upgrade for performance enthusiasts seeking precise, reliable power delivery from their nitrous system on a 4500-flanged carburetor platform.