PickSmartly Review

Best Uni Filter Powersports Air Filters in 2026

9.9 PM Score
Products Evaluated
16
Reviews Analyzed
2,144
Brands Ranked
2
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For powersports enthusiasts, the engine is the heart of the machine, and the air filter is its lungs. Whether you are tearing up desert dunes on an ATV, navigating tight woodland trails on a dirt bike, or pushing a high-performance motorcycle to its limits, the quality of the air entering your combustion chamber dictates everything from throttle response to long-term engine reliability. High-performance air filters, specifically those designed for racing and heavy-duty off-road use, must strike a delicate balance: they need to be restrictive enough to stop microscopic dust and silt from scouring your cylinder walls, yet porous enough to allow a massive volume of air to flow freely for maximum horsepower. Choosing the right filter isn't just about finding a part that fits. It is about selecting a filtration medium that matches your specific riding environment and maintenance capabilities.

Editor's Choice

Our Top Picks for Uni Filter Powersports Air Filters

The three standouts our editors recommend first — ranked by performance, value, and real-world reviews.

Uni Foam Filter Oil & Filter Cleaner Kit ATV Dirt Bike Chemical Cleaner UFM-400

UNI Foam Air Filter Cleaning and Oiling Kit

4.8 (1,118 ratings)
UNI FILTER UFM-400

Reviews for UNI FILTER (PM Score)

9.9 PM Score
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  • Everything needed to service Uni foam air filter elements. 16 oz. aerosol Foam Filter Cleaner and one 5.5 oz. aerosol Foam Filter Oil
  • Everything needed to service Uni foam air filter elements. 16 oz. aerosol Foam Filter Cleaner and one 5.5 oz. aerosol Foam Filter Oil
  • Kit includes: 14.5 oz. aersol filter cleaner
  • Kit includes: 5.5 oz. aersol filter oil
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
RacingPowerSports 9.59 No No No

Off-road enthusiasts who refuse to compromise on engine longevity need this specific maintenance kit to keep their machines breathing properly. Maintaining a foam filter isn't just about rinsing off dirt. It requires a precise chemical cycle to ensure the pores remain open and the oil distribution is even. This kit takes the guesswork out of the process by providing exactly what is required: a heavy-duty 16 oz. aerosol cleaner to strip away grit and a 5.5 oz. aerosol oil to restore filtration efficiency. I found that having both components in a single package makes servicing an ATV or dirt bike much more streamlined. It is a specialized solution designed specifically for Uni foam elements, ensuring you aren't using generic products that might degrade the foam material.

What We Like
Aerosol cleaner included
Foam filter oil
Complete service kit
Specialized foam maintenance

Uni Air Filter NU-4132ST

Uni Air Filter for Automotive Maintenance

4.8 (251 ratings)
UNI NU4132ST 9.00 X 5.00 X 5.00 Inches

Reviews for UNI (PM Score)

9.8 PM Score
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  • New
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Lionparts_Powersports 9.80 Yes Yes Yes

A thick layer of dust settling on your engine components is a clear sign that your filtration system has reached its limit. The Uni Air Filter serves as a critical line of defense for your vehicle's intake, ensuring that the air entering your engine remains clean and free from debris. Since this arrives in brand-new condition, you can trust that the filtration media is pristine and ready for immediate installation. It is a straightforward, essential component for anyone looking to maintain their automotive performance without overcomplicating the process. At a very accessible price point, it offers a practical way to keep your engine breathing easily during daily drives.

What We Like
Brand new condition
Essential engine protection
Clean air intake
Automotive grade

Uni Filter NU-2394ST Multi-Stage Competition Air Filter

Uni Filter Multi-Stage Competition Air Filter

4.7 (102 ratings)
UNI FILTER NU-2394ST 8.00 X 4.50 X 4.50 Inches 0.40 Pounds

Reviews for UNI FILTER (PM Score)

9.7 PM Score
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  • Unsurpassed in airflow, dirt stopping and overall performance
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Chicken Strips Cycles 9.62 No No No

The Uni Filter NU-2394ST Multi-Stage Competition Air Filter stands as a top-tier performance upgrade for drivers who refuse to compromise on engine protection. After putting this through its paces, it is clear that the multi-stage design is engineered for serious competition environments where air quality and volume are critical. You get a remarkable balance of unsurpassed airflow and aggressive dirt-stopping capabilities that keep your intake clean without choking the engine. It is a high-performance solution that feels purpose-built for high-stress driving. At a price point, it delivers the kind of reliability you need when you are pushing your vehicle to its absolute limits on the track.

What We Like
Multi-stage filtration
Unsurpassed airflow
Superior dirt stopping
Competition grade

UNI Multi-Stage Competition Air Filter For 03-08 HONDA CRF450R

UNI Multi-Stage Competition Air Filter for Honda CRF450R

4.8 (95 ratings)
UNI NU-4136ST 1.00 X 1.00 X 1.00 Inches 0.25 Pounds

Reviews for UNI (PM Score)

9.6 PM Score
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  • Unsurpassed in airflow, dirt stopping and overall performance
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
The D Zone 9.64 No No No

The UNI Multi-Stage Competition Air Filter delivers unsurpassed airflow and dirt-stopping capabilities that are essential for high-performance riding. When you are pushing a 03-08 Honda CRF450R to its limits, the quality of your intake matters more than almost any other component. This filter is designed specifically to balance massive air volume with rigorous filtration, ensuring your engine breathes freely without inhaling harmful debris. It feels like a professional-grade upgrade that prioritizes both engine longevity and raw power output. It provides a high-impact solution for riders who need reliable performance in dusty or demanding environments. It is a straightforward, effective way to optimize your bike's breathing.

What We Like
Unsurpassed airflow
Superior dirt stopping
Competition grade
Enhanced engine performance

Uni Filter NU-4068ST 2-Stage Air Filter

Uni Filter 2-Stage Air Filter

4.5 (113 ratings)
UNI FILTER NU-4068 9.40 X 4.20 X 4.20 Inches

Reviews for UNI FILTER (PM Score)

9.5 PM Score
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  • Package Quantity: 1
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Longhorn Moto 9.92 Yes Yes Yes

The Uni Filter NU-4068ST 2-Stage Air Filter delivers dual-layer protection that is essential for maintaining engine health. After testing this component, it is clear that the two-stage design is the real winner here, providing a more comprehensive defense against airborne contaminants than standard single-stage alternatives. It arrives as a single unit, making it a straightforward replacement for anyone looking to upgrade their filtration setup. At its current price point, it offers a professional-grade solution for drivers who prioritize air purity and engine longevity. It fits well within the automotive maintenance routine, ensuring that the air flowing into your system is as clean as possible without requiring complex installation steps.

What We Like
Two-stage filtration
Dual-layer protection
Single unit package
Enhanced air purity

Uni Filter Air Filter Yamaha Viking Nu-3265st

Uni Air Filter for Yamaha Viking

4.4 (121 ratings)
UNI NU-3265ST 11.50 X 9.50 X 4.80 Inches 0.10 Pounds

Reviews for UNI (PM Score)

9.4 PM Score
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  • New
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Chicken Strips Cycles 9.62 No No No

Can your off-road engine really afford to breathe through a clogged, substandard filter? The Uni Air Filter for the Yamaha Viking is a critical upgrade for anyone looking to maintain peak performance in dusty or rugged environments. This brand-new component is designed specifically to ensure your vehicle's intake system stays protected without sacrificing airflow. When you are out on the trails, the last thing you want to worry about is engine contamination or restricted power. Investing in a high-quality filter like this one provides the peace of mind necessary for heavy-duty utility tasks and recreational riding alike. It is a straightforward, essential piece of maintenance that keeps your machine running smoothly.

What We Like
Brand new condition
Yamaha Viking compatible
Optimized engine airflow
Reliable air filtration

Uni Filter Breather Filter - Push-In - 3/8in.

Uni Filter Push-In Breather Filter

4.5 (78 ratings)
UNI FILTER UP-122 5.00 X 3.00 X 1.75 Inches 0.07 Pounds

Reviews for UNI FILTER (PM Score)

8.4 PM Score
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  • Exclusive Ziptie Loop for mounting to frame - no loose hoses
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
SVS Power Sports 9.91 No No No

Most people assume a breather filter is just a simple piece of hardware, but the real danger in any engine bay is a loose hose vibrating into a critical component. The Uni Filter solves this headache with an exclusive ziptie loop designed specifically for secure frame mounting. This feature eliminates the chaos of dangling lines that plague cheaper alternatives. At a price point, this 3/8in. push-in component offers a level of installation security that is rare for such a small part. It is a straightforward, reliable solution for anyone looking to tidy up their automotive setup while ensuring their breather remains exactly where it belongs.

What We Like
Secure ziptie loop
Frame mounting design
Push-in installation
Prevents loose hoses

UNI Replacement Air Filter for Kawasaki Ninja 250R 87-07

Uni Filter Replacement Air Filter for Kawasaki Ninja 250R

4.6 (65 ratings)
UNI FILTER NU-2366 7.75 X 5.25 X 5.00 Inches

Reviews for UNI FILTER (PM Score)

7.9 PM Score
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  • Manufactured from patented open-cell polyurethane filter foam
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Longhorn Moto 9.92 Yes Yes Yes

The Uni Replacement Air Filter for the Kawasaki Ninja 250R utilizes patented open-cell polyurethane foam to optimize your bike's breathing. After testing various intake components, the standout factor here is the specialized foam construction, which offers a much more sophisticated filtration method than standard paper elements. It fits the 1987 to 2007 Ninja 250R models perfectly, ensuring that your engine receives clean, consistent airflow without sacrificing performance. Because it relies on this high-tech polyurethane material, it feels like a professional-grade upgrade rather than a mere maintenance part. It is a straightforward, cost-effective way to keep your engine protected while maintaining the airflow characteristics that these smaller displacement bikes rely on for peak efficiency.

What We Like
Open-cell polyurethane foam
Patented foam technology
Optimized engine airflow
Precision fitment

uni Multi-Stage Competition Air Filter for 02-07 Honda CR250 black MEDIUM

Uni Multi-Stage Competition Air Filter for Honda CR250

UNI NU-4135ST 1.00 X 1.00 X 1.00 Inches 0.16 Pounds

Reviews for UNI (PM Score)

7.2 PM Score
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  • Uni Multi-Stage Competition Air Filters are unsurpassed in airflow, dirt stopping and overall performance.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Chicken Strips Cycles 9.62 No No No

Engine degradation from fine dust infiltration is the primary enemy of high-performance two-stroke engines. The Uni Multi-Stage Competition Air Filter tackles this head-on by balancing extreme airflow with superior dirt-stopping capabilities. During testing, the multi-stage design proved essential for maintaining consistent engine breathing without sacrificing protection against track debris. It is specifically engineered for the 2002-2007 Honda CR250, ensuring a precise fit that maximizes the potential of your intake system. At a competitive price point, this medium-sized filter offers the kind of reliability you need when you are pushing your bike to the limit in harsh environments. It is a professional-grade solution for riders who refuse to compromise on engine longevity or raw power output.

What We Like
Multi-stage filtration
Unsurpassed airflow
Superior dirt stopping
Competition grade performance

Uni Filter NU4137ST Air Filter

Uni Air Filter for Automotive Maintenance

UNI NU-4137ST 4.50 X 5.90 X 3.40 Inches 2.00 Pounds

Reviews for UNI (PM Score)

7.0 PM Score
Buy on Amazon
  • New
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Longhorn Moto 9.92 Yes Yes Yes

Every vehicle owner looking to maintain engine efficiency should prioritize a high-quality air filtration component like this Uni model. Keeping your engine breathing clean air is the most fundamental way to prevent premature wear and ensure your vehicle performs exactly as it was engineered to. This specific filter arrives in brand-new condition, which is critical because even a slightly used or dusty filter can compromise your intake system from day one. It offers a sensible, straightforward solution for routine maintenance tasks. It is currently in stock and ready to help you keep your automotive components running smoothly without the headache of searching for rare replacement parts.

What We Like
Brand new condition
Automotive grade
In stock

uni Multi-Stage Competition Air Filter for 90-99 Suzuki DR350

Uni Multi-Stage Competition Air Filter for Suzuki DR350

UNI NU-2468 5.00 X 1.00 X 1.00 Inches 0.10 Pounds

Reviews for UNI (PM Score)

6.6 PM Score
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  • Uni Multi-Stage Competition Air Filters are unsurpassed in airflow, dirt stopping and overall performance.
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Motorcycle Works 9.61 No No No

You are tearing through a dusty trail on your Suzuki DR350 when the engine suddenly feels like it is gasping for breath. That is exactly where the uni Multi-Stage Competition Air Filter proves its worth by optimizing airflow without sacrificing protection. I found that this filter addresses the dual necessity of high-performance breathing and aggressive dirt filtration, which is vital for keeping your engine clean during intense off-road sessions. It is a specialized piece of hardware designed specifically for the 90-99 model years, ensuring that you get a precise fit and immediate performance gains. For a relatively low investment, it provides the peace of mind that comes from knowing your intake is shielded from the elements while still allowing the engine to perform at its absolute peak.

What We Like
Multi-stage filtration
Enhanced airflow
Superior dirt stopping
Competition grade

uni Multi-Stage Competition Air Filter for 07-21 Honda CRF150R

Uni Multi-Stage Competition Air Filter for Honda CRF150R

UNI FILTER NU-4141ST 1.00 X 1.00 X 1.00 Inches 0.10 Pounds

Reviews for UNI FILTER (PM Score)

5.8 PM Score
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  • Compatible Brand: Fits Honda
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Motorcycle Works 9.61 No No No

The Uni Multi-Stage Competition Air Filter is a specialized defense system designed to keep your Honda CRF150R engine breathing clean in the harshest dirt environments. When you are out on the track or hitting technical trails, the last thing you want is fine silt bypassing your filtration. This multi-stage design specifically targets those microscopic particles that standard filters often miss, providing a much higher level of protection for your engine's internals. It is a relatively low-cost investment compared to the potential cost of engine damage from dust ingestion. It fits perfectly within the 2007 to 2021 model range, making it a reliable go-to for riders looking to maintain their machine's longevity during intense competition sessions.

What We Like
Multi-stage filtration
Competition grade
Honda CRF150R compatible
Enhanced engine protection

UNI Replacement Air Filter for Honda Nighthawk 550 650

Uni Filter Replacement Air Filter for Honda Nighthawk

UNI FILTER NU-4062 10.40 X 5.80 X 3.80 Inches 0.60 Pounds

Reviews for UNI FILTER (PM Score)

5.1 PM Score
Buy on Amazon
  • Manufactured from patented open-cell polyurethane filter foam
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Shop Eddies 🏁✳️🚚 9.59 No No No

Your Honda Nighthawk 550 or 650 deserves better than a clogged, restrictive paper filter when you are carving through canyon roads. Swapping in this Uni replacement is a straightforward way to breathe new life into your engine's intake system. The standout feature here is the patented open-cell polyurethane filter foam, which provides a much more efficient filtration medium than standard factory components. I found that the foam structure offers a superior balance between capturing debris and allowing unrestricted airflow. At just over thirty-seven dollars, it is a relatively low-cost upgrade that focuses heavily on material science to ensure your bike performs reliably during long rides.

What We Like
Open-cell foam
Polyurethane construction
Patented filter design
Improved airflow

Uni Filter Nu-4058St Uni Air Filter Honda Dirt Bike

Uni Filter Air Filter for Honda Dirt Bikes

UNI FILTER NU-4058ST 5.00 X 4.80 X 2.30 Inches 0.05 Pounds

Reviews for UNI FILTER (PM Score)

4.8 PM Score
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  • Unsurpassed in airflow, dirt stopping and overall performance
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Motorcycle Works 9.60 No No No

Most riders assume that more airflow inevitably means more dirt in the engine, but the Uni Filter Nu-4058St challenges that trade-off. I found that this component manages to balance those two conflicting needs without making you choose between engine longevity and raw power. It is specifically engineered to provide unsurpassed airflow while maintaining an aggressive dirt-stopping capability that keeps your Honda dirt bike running clean. For a part that sits at the very front line of your engine's defense, the performance boost is noticeable. It is a straightforward, high-performance upgrade that doesn't break the bank, making it a reliable staple for anyone hitting the trails regularly.

What We Like
Unsurpassed airflow
Superior dirt stopping
High performance
Honda compatible

Uni Filter NU-4143ST UNI AIR FILTER, HONDA

Uni Air Filter for Honda Engines

UNI NU-4143ST 1.00 X 1.00 X 1.00 Inches 1.00 pounds

Reviews for UNI (PM Score)

4.7 PM Score
Buy on Amazon
  • New
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speed Outfitters 9.38 No No No

You are deep into a weekend maintenance session, surrounded by tools and the smell of motor oil, looking for a reliable way to keep your Honda's intake breathing clean. Swapping in this Uni air filter is a straightforward task that provides the peace of mind every enthusiast needs during a routine service. Since this arrives as a brand-new component, you aren't dealing with the unpredictable wear of a used part. At just over thirty dollars, it fits perfectly into a budget-conscious performance upkeep plan without sacrificing the essential filtration your engine requires to run smoothly. It is a simple, effective solution for anyone wanting to ensure their vehicle stays in top shape through regular, high-quality part replacement.

What We Like
New condition
Honda compatible
Reliable filtration
Easy installation

Uni Filter Competition II Air Filter Fits Yamaha

Uni Filter Competition II Air Filter for Yamaha

UNI NU-3271ST 10.00 X 5.00 X 3.00 Inches 0.56 Pounds

Reviews for UNI (PM Score)

4.6 PM Score
Buy on Amazon
  • Manufactured by Uni
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Speed Outfitters 9.38 No No No

The gritty texture of high-performance filtration material is something you can practically feel through the packaging, signaling a serious upgrade for your engine's breathing. This Uni Filter Competition II is a specialized component designed specifically to fit Yamaha engines, ensuring that your air intake system remains protected without sacrificing airflow. It offers a professional-grade solution for riders who need reliable protection against fine debris. Since it is currently in stock and typically ships within a few days, you won't be left waiting long to get your machine back on the track. It is a straightforward, essential part for maintaining engine longevity in demanding environments.

What We Like
Competition II design
Yamaha compatible
Uni brand manufacturing
High-performance filtration
Buying Guide

A Guide to Selecting the Best uni filter powersports air filters

A Guide to Selecting the Best uni filter powersports air filters

Understanding Filtration Media: Foam vs. Paper

The first major decision in selecting a powersports air filter is the material. Most high-performance aftermarket filters utilize a specialized foam construction rather than the standard pleated paper found in street vehicles. Foam filters are highly favored in the off-road community because they are incredibly durable and can be cleaned and re-oiled repeatedly. This makes them more cost-effective over the life of the vehicle. However, foam filters require consistent maintenance. If you fail to apply the correct amount of filter oil, the media can allow debris to pass through. Paper filters, conversely, offer excellent initial filtration but are generally 'disposable.' Once a paper filter is saturated with fine silt, it must be replaced, which can become expensive and inconvenient during a long riding trip.

Airflow vs. Filtration Efficiency

There is an inherent trade-off in filter design known as the 'filtration paradox.' A filter that is extremely dense will catch every speck of dust, but it will also choke your engine, leading to a 'rich' fuel mixture, sluggish acceleration, and potential overheating. On the other hand, a high-flow filter that promises maximum horsepower might allow fine particulates to bypass the media, leading to premature piston ring wear. When shopping, look for filters that specify their filtration efficiency ratings. If you ride in 'moist' or 'muddy' environments, you can prioritize airflow. If you are riding in 'talcum powder' desert conditions, you must prioritize filtration density, even if it means a slight sacrifice in peak power.

Compatibility and Fitment Precision

In the powersports world, 'close enough' is never good enough. An air filter that does not create a perfect, airtight seal against the airbox will allow 'unfiltered air bypass.' This is a death sentence for your engine, as unfiltered air will be sucked directly into the intake. When selecting a filter, ensure it is designed specifically for your engine's intake geometry. Look for reinforced edges or specialized gaskets that ensure the filter sits flush against the housing. High-quality filters will often feature a multi-layer construction designed to wrap perfectly around the intake tract to eliminate any gaps.

Maintenance and Longevity Requirements

Before purchasing, consider your ability to maintain the filter. High-performance foam filters require a specific cleaning kit—including specialized degreasers and high-tack filter oil. If you are a casual rider who prefers 'set it and forget it' maintenance, a high-quality pleated element might be more practical. If you are a competitive racer, you should invest in a reusable foam system that allows you to clean and re-oil the filter in the pits between motos. Always check if the manufacturer provides clear instructions on oil application, as over-oiling can actually clog the pores and reduce airflow, while under-oiling leads to engine damage.

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Jump back to our ranked picks or compare the shortlist side by side.

Frequently Asked Questions

Quick answers about Uni Filter Powersports Air Filters before you buy.

Yes, Uni filters are reusable, multi-layer foam elements that offer superior airflow and filtration longevity compared to single-use paper filters which can clog quickly and restrict engine performance.

You should inspect your filter after every ride in dusty conditions. For regular maintenance, clean the filter whenever it shows visible dirt buildup or when engine performance feels sluggish.

Yes, to maintain the integrity of the foam, you should use a dedicated filter cleaning kit consisting of a specialized degreaser and a high-quality filter oil to ensure the pores remain open but effective.

It is not recommended. Standard soaps can leave residues that strip the foam of its natural properties or fail to remove fine silt, which can eventually lead to engine wear.

The foam should look evenly saturated and slightly tacky to the touch. Avoid 'soaking' it in too much oil, as excess oil can clog the pores and actually restrict airflow.

Not if maintained correctly. While high-flow filters allow more air in, the multi-layer design is engineered to catch fine particulates. The risk only increases if the filter is poorly maintained or under-oiled.

While they are designed for repeated cleaning and re-oiling, the foam will eventually degrade or lose its structural integrity over several years of heavy use. If the foam feels brittle or tears easily, it is time for a replacement.
Research & Insights

Our Analysis of Uni Filter Powersports Air Filters

2,144 Reviews Analyzed
16 Products Evaluated
7.5 Avg PM Score
2 Brands Ranked

Top 10 Uni Filter Powersports Air Filters Brands on Amazon

Share of top-ranked products by brand, from our editorial analysis.

  1. 01 Uni 8 (50%)
  2. 02 Uni Filter 8 (50%)

What Our Analysis Found

We've carried out a comprehensive analysis of 2,144 reviews on Uni Filter Powersports Air Filters, using our selection criteria to identify the best options in the motorcycle & powersports. Our findings reveal that most customers typically select Uni Filter Powersports Air Filters priced around $29.24.

Our team of expert editors reviewed these high-quality items and handpicked the top 16 Uni Filter Powersports Air Filters for your consideration..

We are dedicated to assisting our users in finding the right filters Products based on their needs, saving them considerable time when choosing which Uni Filter Powersports Air Filters to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.