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NX - Nitrous Express
Founded by a racer frustrated with lagging nitrous technology, Nitrous Express makes nitrous oxide injection systems designed from the ground up to be the most advanced,...
Founded by a racer frustrated with lagging nitrous technology, Nitrous Express makes nitrous oxide injection systems designed from the ground up to be the most advanced, most reliable, and most potent systems available. Built and extensively tested in America, NX “wet” nitrous systems arrive ready to install, without all the trial-and-error associated with other nitrous kits, and with accurate at-the-wheel horsepower ratings. In pursuit of perfect nitrous/fuel delivery, Nitrous Express CNC-machines its own high-efficiency, low-turbulence valves, jets, and solenoids. For complete systems, or components...
Founded by a racer frustrated with lagging nitrous technology, Nitrous Express makes nitrous oxide injection systems designed from the ground up to be the most advanced, most reliable, and most potent systems available. Built and extensively tested in America, NX “wet” nitrous systems arrive ready to install, without all the trial-and-error associated with other nitrous kits, and with accurate at-the-wheel horsepower ratings. In pursuit of perfect nitrous/fuel delivery, Nitrous Express CNC-machines its own high-efficiency, low-turbulence valves, jets, and solenoids. For complete systems, or components to complete or expand your existing nitrous setup, check out NX Nitrous Express products, available from Summit Racing!
Showing In Stock Items. Show All 120 Items.
Nitrous Oxide Systems, Pro Power, Alcohol, 4150 Flange, 100-500 HP, 10 lb. Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67545-10
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Nitrous Oxide Systems, Stage 6, Alcohol, 4150 Flange, 100-300 HP, 10 lb. Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67245-10
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Nitrous Oxide Systems, Pro Power, Alcohol, 4150 Flange, 100-500 HP, No Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67545-00
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Oxide Systems, Pro Power, Alcohol, 4150 Flange, 100-500 HP, 15 lb. Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67545-15
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Oxide Systems, Stage 6, Alcohol, 4150 Flange, 100-300 HP, No Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67245-00
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Oxide Systems, Stage 6, Alcohol, 4150 Flange, 100-300 HP, 12 lb. Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67245-12
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Oxide Systems, Stage 6, Alcohol, 4150 Flange, 100-300 HP, 15 lb. Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67245-15
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Oxide Systems, Pro Power, Alcohol, 4150 Flange, 100-500 HP, 12 lb. Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67545-12
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Carburetor Gasket; Holley 4150 Carburetor Gasket; 1 pc.
Part Number: NEX-16175
Estimated Ship Date: Today
Estimated Ship Date: Today
Nitrous Oxide Activation Switches, Throttle Position Activation Switches, Bracket, Carburetor Fuel Delivery, Holley, 4150, 4150 HP, Each
Part Number: NEX-15569
Estimated Ship Date: Today
Estimated Ship Date: Today
Nitrous System, 10 lb Bottle, 4150 4-Barrel/Gas, Kit
Part Number: NEX-30040-10
Estimated Ship Date: Today
Estimated Ship Date: Today
Nitrous Oxide Systems, Assissin Plate Stage 6, Dominator 4150 Flange, 50-300 HP, 10 lb. Aluminum Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67040-10
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Nitrous System, 10 lb Bottle, Dual/4150 4-Barrel/Gas, 50-100-150-200-250-300 HP, Kit
Part Number: NEX-30240-10
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Plate, Pro-Power, 4150 4-Barrel, Aluminum, Black, Each
Part Number: NEX-NP504
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
4150 Covert Crossbar Plate System, Stage 6 50-300Hp (15# Bottle)
Part Number: NEX-63541-15
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous System,10 lb Bottle, 4150 4-Barrel/Alcohol, 50-100-150-200-250-300 HP, Kit
Part Number: NEX-30045-10
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Express Stage 6 Nitrous Plate, 4150 Flange, Crossbar, Wet, Aluminum, Black Anodized, Universal, Each
Part Number: NEX-NP606
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Jet Kit, 4150 4-Barrel/Gas, Jet Kit
Part Number: NEX-30040JP
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Need It Sooner? We recommend these similar substitute parts:
Nitrous Oxide Systems, Assassin Plate Stage 6, Dominator 4150 Flange, 50-300 HP, No Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67040-00
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Plate, Assassin, Square Bore, 4150, Plate Only, Each
Part Number: NEX-NP674
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous System, 15 lb Bottle, Dual/4150 4-Barrel/Gas, 50-100-150-200-250-300 HP, Kit
Part Number: NEX-30240-15
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous System, Dual/4150 4-Barrel/Gas, 50-100-150-200-250-300 HP, No Bottle, Kit
Part Number: NEX-30240-00
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Oxide Solenoid Mounting Brackets, Carburetor Flange Mounting Style, Aluminum, Black Anodized, 4150, 4150 HP, Each
Part Number: NEX-15728D
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous Oxide Systems, Pro Power, Dominator 4150 Flange, 100-500 HP, No Bottle, Wiring, Hardware, Universal, Kit
Part Number: NEX-67540-00
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
Nitrous System, 10 lb Bottle, 4150 4-Barrel/Gas, 100-200-300-400-500 HP, Kit
Part Number: NEX-50040-10
Not Yet Reviewed
Estimated Ship Date: Apr 17, 2026 if ordered today
Estimated Ship Date: Apr 17, 2026 if ordered today
