UNI FILTER NU-4105ST Air 804451041052 CR500R/CR125R/CR250R

( Brand: Uni Filter ), ( Manufacturer Part Number: NU-4105ST ), ( Warranty Details: See Manufacturer ), ( UPC: 804451041052 )

Review UNI FILTER Air #nu-4105st For Honda Cr500r/cr125r/cr250r fits CR500R CR125R CR250R

Introducing the UNI Filter NU-4105 ST Air Filter, specifically designed for Honda CR500R, CR125R, and CR250R models. This high-performance air filter is engineered to provide exceptional engine protection and improved airflow, enhancing the overall performance of your motorcycle.

The UNI Filter NU-4105 ST is constructed with a pleated cotton media, which offers excellent filtration efficiency. The pleats increase the surface area, trapping more dirt and debris while allowing clean air to pass through. The filter's design ensures a snug fit in your motorcycle's airbox, sealing effectively to prevent unwanted contaminants from entering the engine.

This air filter boasts a unique self-cleaning feature. The oiled media absorbs and holds dirt and debris, releasing clean oil back into the intake system for continuous lubrication. This not only keeps the engine clean but also extends the life of the filter.

The UNI Filter NU-4105 ST is made with a high-quality, heat-resistant paper. It can withstand the extreme temperatures generated by your motorcycle's engine, ensuring optimal performance even in the most demanding conditions.

Installation is a breeze. The filter comes with detailed instructions and is easy to replace. Simply remove the old filter, clean the airbox, install the new UNI Filter NU-4105 ST, and enjoy the improved performance of your Honda CR500R, CR125R, or CR250R.

By choosing the UNI Filter NU-4105 ST, you're investing in a high-quality, long-lasting air filter that will protect your motorcycle's engine and boost its performance. With its excellent filtration efficiency, self-cleaning feature, and durability, this air filter is an essential upgrade for any serious off-road rider.

The Honda CR500R, CR125R, and CR250R are popular motocross bikes known for their power and agility. Upgrading the stock air filter with a high-performance aftermarket filter like the UNI Filter Nu-4105ST can enhance the bike's airflow and filtration efficiency. In this analysis, we will discuss the pros and cons of using the UNI Filter Nu-4105ST for Honda CR500R, CR125R, and CR250R.

1. Improved Airflow: The UNI Filter Nu-4105ST provides better airflow compared to the stock filter. This results in increased horsepower and better engine performance.

2. Enhanced Filtration: The filter's pleated design and high-quality filter media ensure that more dirt and debris are trapped, resulting in better engine protection.

3. Longer Filter Life: The UNI Filter Nu-4105ST has a longer filter life compared to the stock filter, reducing the frequency of filter replacements.

4. Custom Fit: The filter is specifically designed for Honda CR models, ensuring a perfect fit and easy installation.

1. Higher Cost: Aftermarket filters like the UNI Filter Nu-4105ST are typically more expensive than stock filters.

2. Potential for Dust Build-up: The filter's increased efficiency in trapping smaller particles may result in more frequent cleanings or replacements due to dust build-up.

3. Delicate Filter Media: The filter media is more delicate than stock filters and requires careful handling during installation and removal.

In conclusion, the UNI Filter Nu-4105ST offers several advantages, including improved airflow, enhanced filtration, longer filter life, and a custom fit. However, it comes with some drawbacks such as a higher cost, potential for dust build-up, and delicate filter media.

Based on the analysis, the UNI Filter Nu-4105ST is a worthwhile investment for motocross riders who prioritize engine performance and protection. The benefits of improved airflow, enhanced filtration, and longer filter life outweigh the cons of higher cost and potential for dust build-up. However, it is crucial to handle the filter media with care during installation and removal to ensure its longevity.

Therefore, we recommend the UNI Filter Nu-4105ST for Honda CR500R, CR125R, and CR250R riders who want to optimize engine performance and protect their engines from dirt and debris.

Details:

Honda CR500R 1987 -1988. Uni Air Filter #NU-4105ST for Honda CR500R/CR125R/CR250R: Made of open cell polyurethane foam unsurpassed air flow that doesn't inhibit engine performance as dirt builds up on the Filters surface. Honda CR125R Elsinore 1987 -1988. Made in the USA.

Designed to fit the OE air box with no modifications. Honda CR125R 1987 -1988. Easy-to-clean and durable for years of use.

part #: nu4105st prices

• $29.01-$51.74

specifications scoofilters:

• for models: Cr500r, Cr125r, Cr250r
• for makes: Honda
• brand: Uni Filter
• mpn: Nu-4105st
• warranty details: See Manufacturer
• upc: 804451041052

seller scooFilters:

• city: Grand Rapids, Michigan
• # reviews: 663608
• rating: 99.7%

offer scooFilters:

• options: Ship-to-home
• availability: In Stock
• quantity: 9
• sold: 0
• started: December 28, 2025

shipping scooFilters:

• class: Standard
• service: Standard
• cost: $0.00
• type: Fixed
• transit: 11-17 Days

payments scooFilters:

• other
• wallet: Apple-pay
• credit card: Visa

returns scooFilters:

• time: 30 Days
• policy: Returns Accepted
• paid by: Seller

general scooFilters:

• Motorcycle Scooter Parts Accessories > Air Intake Fuel Delivery > Air Filters
• condition: New

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