Guide to Nos Tanks Sizes – Find the Right One for You

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Nitrous oxide (NOS) is a popular performance enhancer used in motorsports. It is a compressed gas that can increase engine power output by providing a burst of oxygen. NOS tanks come in various sizes, and choosing the right one can be challenging. In this guide, we’ll explore the different NOS tank sizes available and help you find the one that’s right for you.

Understanding NOS Tanks

What are NOS tanks?

NOS tanks are compressed gas containers used to store nitrous oxide, which is a colorless, sweet-smelling gas used in motorsports. They come in various sizes and are usually made of aluminum or steel.

How do NOS tanks work?

NOS tanks work by providing a burst of oxygen to the engine, which increases power output. The nitrous oxide is stored in the tank in a liquid state, and when released into the engine, it vaporizes and mixes with fuel to create a more powerful combustion.

NOS Tank Sizes

5-pound NOS Tank

The 5-pound NOS tank is the smallest and most portable NOS tank available. It is ideal for small engines or those looking for a short burst of power. It can provide up to 80 seconds of spray time and is relatively inexpensive.

10-pound NOS Tank

The 10-pound NOS tank is a popular choice among motorsports enthusiasts. It is larger than the 5-pound tank, providing up to 160 seconds of spray time. It is still relatively portable and is suitable for small to medium engines.

15-pound NOS Tank

The 15-pound NOS tank is a step up from the 10-pound tank and provides up to 240 seconds of spray time. It is suitable for medium to large engines and is a popular choice among drag racers.

20-pound NOS Tank

The 20-pound NOS tank is a large tank suitable for larger engines. It can provide up to 320 seconds of spray time and is popular among truck and tractor pullers.

50-pound NOS Tank

The 50-pound NOS tank is the largest and most powerful NOS tank available. It is suitable for the largest engines and can provide up to 800 seconds of spray time. It is commonly used in tractor pulling and drag racing competitions.

Choosing the Right NOS Tank Size

Choosing the right NOS tank size can be challenging, and several factors should be considered.

Purpose of Use

The first factor to consider is the purpose of use. If you’re using NOS for short bursts of power, a smaller tank such as the 5-pound tank may be suitable. If you’re using NOS for extended periods

of time, a larger tank such as the 50-pound tank may be necessary.

Vehicle Type

The size of the engine in your vehicle is another critical factor to consider. Smaller engines may not require as much NOS as larger engines, so a smaller tank may be suitable for those vehicles. On the other hand, larger engines may require a larger tank to provide enough NOS for extended periods of use.


The cost of the NOS tank is another factor to consider. Smaller tanks are generally less expensive than larger tanks, so if budget is a concern, a smaller tank may be the best option.

Available Space

The size of the NOS tank can also be limited by the available space in your vehicle. Smaller tanks can be more portable and easier to install in tight spaces, while larger tanks may require more room.

How to Refill NOS Tanks

NOS tanks need to be refilled periodically, depending on how often they are used. Here are two common methods for refilling NOS tanks:

Refilling at Home

Some NOS enthusiasts choose to refill their tanks at home. To do this, you’ll need a NOS refill station, which can be purchased online or at auto parts stores. Refilling NOS tanks at home can save money in the long run, but it’s essential to follow all safety procedures and handle the NOS with care.

Refilling at a Shop

Another option for refilling NOS tanks is to take them to a shop that specializes in NOS. These shops have the necessary equipment and expertise to refill NOS tanks safely. While it may be more expensive than refilling at home, taking your tank to a shop can ensure that it’s refilled correctly and safely.

NOS Tank Safety

It’s essential to handle NOS tanks with care and follow all safety procedures to avoid accidents or injury. Here are some tips for handling and storing NOS tanks safely:

Handling NOS Tanks

Always wear gloves when handling NOS tanks, as the tanks can become extremely cold. Make sure the tank is secure when transporting it, and never drop or throw the tank.

Storing NOS Tanks

Store NOS tanks in a cool, dry place away from direct sunlight and heat sources. Make sure the tank is secured and not at risk of falling over. Keep the tank away from flammable materials and never store it near an open flame.


Choosing the right NOS tank size can be challenging, but by considering the purpose of use, vehicle type, budget, and available space, you can find the right tank for your needs. It’s also essential to handle and store NOS tanks safely and follow all safety procedures when refilling or using them.


Is NOS legal to use in motorsports?

Yes, NOS is legal to use in motorsports, but regulations may vary by event and location.

How often do NOS tanks need to be refilled?

The frequency of NOS tank refills depends on how often the tank is used and the size of the tank.

Can NOS tanks be recycled?

Yes, NOS tanks can be recycled. Check with your local recycling center for guidelines on how to recycle NOS tanks.

Can I install a larger NOS tank than recommended for my vehicle?

Installing a larger NOS tank than recommended for your vehicle can be dangerous and may cause damage to the engine.

Can NOS tanks be stored outside?

NOS tanks should be stored in a cool, dry place away from direct sunlight and heat sources. They should not be stored outside where they may be exposed to the elements.

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