Nitrous Express Lightning Nitrous Solenoid Pro-Power (Up to 500 HP) - 15300L

The Nitrous Express Lightning Nitrous Solenoid Pro-Power (Part # 15300L) is a high-performance nitrous solenoid engineered for applications demanding up to 500 horsepower. Whether you're building a dedicated drag car, upgrading an existing nitrous system, or replacing a worn solenoid on a street/strip build, this Lightning Series solenoid delivers the flow capacity, reliability, and precision that serious nitrous racers demand. Its universal design makes it a go-to replacement or upgrade solenoid for carbureted and EFI nitrous systems across a wide range of vehicles and platforms.

Key Features & Benefits

• CNC-Machined Billet Aluminum Body: The Lightning solenoid is CNC machined from lightweight billet aluminum, meaning tighter tolerances, a more consistent valve seat, and a durable housing that holds up under repeated high-pressure cycling — important for racers who hit the bottle often.
• True Carbon Fiber Can: The solenoid is topped with a genuine carbon fiber can, reducing overall weight compared to traditional steel-capped solenoids. For weight-conscious builds, every ounce counts, and the carbon fiber top delivers both weight savings and a premium appearance under the hood or in the engine bay.
• .123" Orifice for Up to 500 HP: The Pro-Power variant features a .123" orifice, purpose-sized to flow enough nitrous for systems producing up to 500 horsepower. This makes it ideal for large single-stage or progressive nitrous setups where maximum flow is critical to performance.
• Raised Inlet & Bottom Exit Design: The Lightning solenoid features a raised inlet and a bottom exit, which eliminates up to four 90-degree turns and one expansion area found in conventional solenoid bodies. Fewer flow restrictions translate directly to better nitrous delivery, quicker response, and more consistent power.
• Integrated Purge / Bypass Port: Every Lightning Series solenoid includes a built-in 1/8" NPT purge or bypass port, so you can run a purge system without adding external fittings or adapters. This simplifies your plumbing and reduces potential leak points.
• 1/8" NPT Inlet and Outlet: Standard 1/8" NPT inlet and outlet ports make this solenoid compatible with the most common nitrous line fittings and easy to integrate into new or existing systems.
• 1200 PSI Maximum Opening Pressure: Rated for up to 1200 PSI maximum opening pressure, this solenoid can handle the full pressure range you'll see from a properly filled nitrous bottle, including high-pressure conditions on warm-weather track days.
• 22-Amp Draw: The solenoid draws 22 amps during operation. When wiring your nitrous system, plan your relay and wiring accordingly to ensure clean, consistent solenoid operation at wide-open throttle.
• Made in the USA Solenoid Quality: Nitrous Express sources its solenoids from U.S. manufacturers, prioritizing quality at the most critical component of any nitrous system. As NX themselves note, the solenoid is the most important component of a nitrous setup — don't compromise here.

Specifications

• Part Number: 15300L
• SKU: NEX15300L
• Orifice Size: .123"
• Maximum Supported Power: Up to 500 HP
• Amperage Draw: 22 amps
• Maximum Opening Pressure: 1200 PSI
• Inlet / Outlet Port Size: 1/8" NPT
• Integrated Purge Port: 1/8" NPT (draw-through design)
• Body Material: CNC-machined billet aluminum
• Can Material: True carbon fiber
• Brand: Nitrous Express

Fitment

The Nitrous Express Lightning Pro-Power solenoid (15300L) is a universal-fit nitrous component — it is not vehicle-year-make-model specific. It is designed to integrate into any nitrous oxide system (carbureted or EFI, single-stage or direct port) that uses standard 1/8" NPT nitrous line fittings and requires a solenoid capable of supporting up to 500 horsepower. It is compatible with drag racing, street/strip, and competition builds across domestic V8 platforms, import applications, diesel setups, and powersports where appropriate nitrous systems are used. Always verify your existing system's plumbing, relay capacity (22-amp draw), and intended power level before purchasing. If you are running a system rated below 500 HP and want a smaller-orifice solenoid, Nitrous Express offers other Lightning Series variants — this Pro-Power model is sized specifically for higher-horsepower demands.

What's in the Box

• 1x Nitrous Express Lightning Nitrous Solenoid Pro-Power (.123" Orifice) — Part # 15300L

Note: Mounting hardware, nitrous lines, and jets are not included. Verify compatibility with your existing system plumbing before ordering.

Why Buy from ThreePiece.us

At ThreePiece.us, we specialize in performance parts and understand that choosing the right nitrous solenoid for your build is not a decision to make blindly. Our team is available to help you confirm fitment, compare Lightning Series solenoid options, and ensure the 15300L is the right orifice size for your power goals. Every order ships free — no minimum, no threshold to hit. Need to spread the cost of your nitrous build across multiple payments? We offer financing through Affirm, so you can get the parts you need now and pay over time. Order with confidence from a retailer that takes performance seriously.

Frequently Asked Questions

Q: What orifice size does the 15300L have, and how much power can it support?

A: The Nitrous Express 15300L features a .123" orifice and is rated to support nitrous systems producing up to 500 horsepower. It is the Pro-Power variant in the Lightning Series lineup.

Q: What are the inlet and outlet port sizes on this solenoid?

A: The solenoid uses 1/8" NPT inlet and outlet ports. It also includes an integrated 1/8" NPT purge or bypass port built directly into the solenoid body, eliminating the need for external purge fittings.

Q: How many amps does the Lightning Pro-Power solenoid draw, and do I need a relay?

A: The solenoid draws 22 amps during operation. You should use an appropriately rated relay and wiring in your nitrous system to handle this load safely and ensure consistent solenoid actuation.

Q: Is this solenoid compatible with my specific vehicle or existing nitrous kit?

A: The 15300L is a universal nitrous solenoid compatible with any system using 1/8" NPT fittings and requiring up to 500 HP of flow capacity. It is not vehicle-specific. If you have questions about compatibility with your particular nitrous system or build, contact our team at ThreePiece.us and we'll help you confirm before you order.