1. Product Overview
The 6 Sigma SP450 Sport ATV Nitrous Oxide (NOS) Kit is designed to provide a significant and immediate horsepower boost to your ATV engine. This system offers a cost-effective solution for enhancing performance, delivering increased peak horsepower and low-end torque. The kit is engineered for straightforward installation, requiring minimal tools and no complex wiring.
Key Benefits:
- Significant Horsepower Boost: Provides a noticeable increase in engine power.
- Enhanced Low-End Torque: Improves acceleration, especially at lower RPMs.
- Cost-Effective Performance: Offers high performance gains relative to investment.
- Easy Installation: Designed for quick setup with basic hand tools.
Kit Contents:
- NOS GO Button Dispenser
- (5) 16 Gram Nitrous Bottles
- UV Resistant Zip Ties
- 5 ft of 3/16 Clear Poly NOS Hose
- Velcro Strap for easy NOS charger replacement
- 3/16" Nozzle & Tee poly fittings for Nitrous and Boost Bottle Install
- Re-purposed 20cc Boost Bottles (used 16 gram nitrous chargers, plain silver, ready to be painted)
- 2 Ft of 3/16 Clear Poly Boost Bottle Hose
- Complete Instructions for Nitrous Install
- Complete instructions for Boost Bottle Install (Note: Only works on 2 stroke engines)
- Engine Tuning Tech for 4 and 2 Strokes

Figure 1: All components of the 6 Sigma SP450 Nitrous Oxide Kit, including the dispenser, nitrous bottles, hoses, fittings, zip ties, and Velcro strap.
2. Safety Information
Before installing or operating the 6 Sigma SP450 Nitrous Oxide Kit, please read and understand all safety warnings and instructions. Nitrous oxide systems involve pressurized gas and require careful handling.
- Always wear appropriate personal protective equipment (PPE) such as safety glasses when handling nitrous bottles or installing the system.
- Ensure proper ventilation when working with nitrous oxide.
- Do not expose nitrous bottles to direct sunlight or temperatures exceeding 120°F (49°C).
- Keep nitrous bottles away from open flames, heat sources, and electrical sparks.
- Never inhale nitrous oxide. It is intended for engine performance enhancement only.
- Verify all connections are secure and leak-free before operating the system.
- Legal Disclaimer: Please check your local laws and regulations regarding the use of nitrous oxide systems on ATVs before purchasing and installing this product.
3. Setup and Installation
The 6 Sigma SP450 Nitrous Oxide Kit is designed for easy installation using basic hand tools. Follow these steps carefully to ensure correct and safe setup.
3.1 Nitrous System Installation
- Mount the NOS GO Button Dispenser: Choose a convenient and secure location on your ATV's handlebars or frame. Use the provided UV resistant zip ties or a suitable bracket to firmly attach the dispenser.
- Connect NOS Hose: Cut the 5 ft of 3/16 clear poly NOS hose to the required length. Connect one end to the NOS GO Button Dispenser and the other end to the 3/16" nozzle.
- Install 3/16" Nozzle & Tee Fitting: Integrate the 3/16" nozzle into your ATV's air intake system. The tee poly fitting can be used to create a secure connection point. Ensure the nozzle is positioned to effectively deliver nitrous oxide into the engine's air stream.
- Insert Nitrous Bottle: Open the dispenser and carefully insert one of the 16 gram nitrous bottles. Close the dispenser securely. The Velcro strap can be used to further secure the bottle or for easy replacement.
- Secure Hoses and Components: Use the remaining UV resistant zip ties to neatly route and secure all hoses and components, preventing them from interfering with moving parts or being damaged by heat.

Figure 2: Example installation of the NOS GO Button Dispenser on an ATV handlebar, showing its compact and accessible placement.
3.2 Boost Bottle Installation (2-Stroke Engines Only)
The re-purposed 20cc boost bottles are designed for 2-stroke engines only. Installing these can further optimize engine response.
- Prepare Boost Bottles: The provided boost bottles are re-purposed 16 gram nitrous chargers. They are plain silver and can be painted to match your ATV's aesthetics if desired.
- Connect Boost Bottle Hose: Use the 2 ft of 3/16 clear poly boost bottle hose to connect the boost bottles to your engine's intake manifold or carburetor boot. The tee poly fittings can assist in creating a secure connection.
- Mount Boost Bottles: Secure the boost bottles in a suitable location, ensuring they do not interfere with other components and are protected from excessive heat or physical damage.
Refer to the "Complete instructions for Boost Bottle Install" included in your kit for detailed diagrams and specific placement recommendations for your ATV model.
4. Operating Instructions
Once the 6 Sigma SP450 Nitrous Oxide Kit is installed, operating it is straightforward. Always ensure your engine is at operating temperature before engaging the nitrous system.
- Engine Warm-up: Allow your ATV engine to reach its normal operating temperature.
- Engage Nitrous: When you desire a power boost, press the NOS GO Button Dispenser. This will release a controlled amount of nitrous oxide into the engine's intake, providing an immediate increase in horsepower and torque.
- Duration of Use: Use nitrous in short bursts for acceleration or during specific performance demands. Avoid prolonged, continuous use.
- Engine Tuning: The kit includes "Engine Tuning Tech for 4 and 2 Strokes" to help you achieve optimum performance. It is crucial to understand how nitrous affects your engine's air/fuel ratio and to make necessary adjustments to prevent engine damage. Consult a professional if you are unsure about tuning.

Figure 3: Illustrative diagram demonstrating typical horsepower gains achieved with a nitrous oxide system, highlighting the performance benefits.
5. Maintenance
Regular maintenance ensures the longevity and safe operation of your 6 Sigma SP450 Nitrous Oxide Kit.
- Nitrous Bottle Replacement: When a 16 gram nitrous bottle is depleted, replace it with a new one. The Velcro strap facilitates easy and quick charger replacement.
- Hose Inspection: Periodically inspect all poly hoses for cracks, kinks, or signs of wear. Replace any damaged hoses immediately.
- Fitting Check: Ensure all poly fittings are secure and free from leaks. Tighten if necessary, but do not overtighten.
- System Cleanliness: Keep the dispenser and other components clean and free from dirt or debris.
- Storage: When not in use for extended periods, remove the nitrous bottle from the dispenser and store it in a cool, dry place away from direct sunlight and heat sources.
6. Troubleshooting
This section addresses common issues you might encounter with your nitrous oxide kit.
| Problem | Possible Cause | Solution |
|---|---|---|
| No power boost when button is pressed. |
|
|
| Nitrous leaking from connections. |
|
|
| Engine runs poorly after nitrous engagement. |
|
|
7. Specifications
- Brand: 6 Sigma
- Model Number: 6SIG2901
- ASIN: B01L31D0OC
- Nitrous Bottle Size: 16 Gram
- Boost Bottle Capacity: 20cc (re-purposed)
- Hose Material: 3/16 Clear Poly
- Compatibility: Nitrous system compatible with various engines; Boost bottles for 2-stroke engines only.
8. Warranty and Support
6 Sigma is committed to providing quality products and support. While specific warranty details are not provided in this manual, please refer to your purchase documentation or contact 6 Sigma directly for warranty information.
Installation Support: If you require assistance with installation or have any questions regarding your 6 Sigma SP450 Nitrous Oxide Kit, please contact 6 Sigma customer support. We are available to help ensure you get the optimum performance from your engine.
For further assistance, visit the 6 Sigma Store on Amazon.





