RU-1240 Performance Air Filter

( Brand: K-n ), ( Manufacturer Part Number: RU-1240 ), ( Type: Air Filter ), ( Machine Type: Street Motorcycle ), ( Vintage Part: No )

Review K N Universal Performance Air Filter

The Ru-1240 Performance Air Filter is a high-performance replacement air filter designed to enhance the air intake system of your vehicle, ensuring optimal engine performance and improved fuel efficiency. This filter is engineered to meet or exceed the original equipment manufacturer (OEM) specifications for your specific make and model.

The Ru-1240 Performance Air Filter is constructed with a multi-layer pleated filter media that can trap and hold more dirt, dust, and other contaminants compared to the standard OEM filters. The filter media is made of a high-quality cotton gauze that is both durable and efficient, allowing for a larger surface area for filtering the incoming air.

The filter housing is designed with a smooth, tapered inlet to minimize air turbulence and maximize airflow, ensuring a consistent and uninterrupted air supply to the engine. The filter's sturdy construction also includes a robust, ribbed frame that provides added strength and rigidity, preventing the filter from collapsing or deforming under pressure.

The Ru-1240 Performance Air Filter is also easy to install, requiring no modifications to your vehicle's air intake system. It comes with a reusable, washable oil bath filter element that helps to keep the filter media clean and free from oil contamination. The filter is also equipped with a high-quality rubber gasket to ensure a tight seal and prevent air leaks.

Overall, the Ru-1240 Performance Air Filter is an excellent investment for vehicle owners who are looking to improve their engine's performance, enhance fuel efficiency, and extend the lifespan of their air intake system. With its superior filtration capabilities, robust construction, and easy installation process, this filter is the ideal choice for those who demand the best for their vehicle.

The Ru-1240 Performance Air Filter is a popular aftermarket air filter option for various vehicle makes and models. Here are some pros and cons to help you make an informed decision about purchasing this air filter:

1. Enhanced Air Flow: The Ru-1240 Performance Air Filter provides increased air flow compared to stock filters. This results in improved engine performance and acceleration.

2. Better Filtration: This air filter offers better filtration than stock filters. It can trap more dirt and debris, ensuring cleaner air enters the engine, which in turn can prolong engine life.

3. Reusable and Washable: The Ru-1240 Performance Air Filter is reusable and washable, making it a cost-effective solution in the long run.

4. Easy Installation: Installing this air filter is a straightforward process, and it usually doesn't require any modifications to the vehicle.

5. Improved Fuel Efficiency: By allowing more air to enter the engine, the Ru-1240 Performance Air Filter can lead to improved fuel efficiency.

1. Initial Cost: While the Ru-1240 Performance Air Filter may save money in the long run due to its reusability, the initial purchase price is typically higher than that of stock air filters.

2. Requires Maintenance: Although the filter is washable, it still requires regular maintenance to ensure optimal performance. Failure to clean or replace the filter when necessary can lead to decreased performance and potential engine damage.

3. Potential Increased Cabin Filter Replacements: Since the Ru-1240 Performance Air Filter traps more dirt and debris, it may result in more frequent cabin filter replacements, which can add to the overall cost.

The Ru-1240 Performance Air Filter offers several benefits, including enhanced air flow, better filtration, easy installation, improved fuel efficiency, and reusability. However, it also comes with some drawbacks, such as the initial cost, the need for regular maintenance, and the potential for increased cabin filter replacements.

If you're looking for improved engine performance, better filtration, and cost savings in the long run, the Ru-1240 Performance Air Filter might be a worthwhile investment. Just remember to factor in the maintenance requirements and potential additional costs when making your decision.

Details:

L x 3.750 in. The shipping charges shown cover cost of only. Many hundreds of model's are available, so regardless the angle or offset diameter your air intake, there is likely a K N universal filter for equipment. Please look closely at pictures and decide condition fitment for yourself.

I am sorry if shipping appears expensive, these are the carrier rates. 1.5mm to fit in-between sizes. All filters are constructed with ultra-strong, molded, pliable rubber flanges, which absorb vibration, allow for secure attachment, and can be stretched up to 1/16 in. K N universal air filters are washable and reusable.

Brand: K N, Manufacturers Part Number: RU-1240, Type: Air Filter Elements, Product Line: K N Universal Performance Filters, Oiled, Style: Conical, Inlet Flange Inside Diameter in.: 2.44, length 7. Top Measurement: 4.500 in.

part #: ru1240 price

• $60.00

specifications scoofilters:

• brand: K-n
• mpn: Ru-1240
• type: Air Filter
• machine type: Street Motorcycle
• vintage part: No

returns scoofilters:

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

payments scoofilters:

• credit card: Discover
• wallet: Google-pay
• other

seller scoofilters:

• city: Washburn, Illinois
• rating: 100.0%
• # reviews: 961

offer scoofilters:

• availability: In Stock
• sold: 0
• quantity: 1
• started: February 9, 2026
• options: Ship-to-home

shipping scoofilters:

• transit: 3-8 Days
• cost: $10.15
• type: Calculated
• service: USPS Ground Advantage, USPS Priority Mail, UPS Ground, UPS 2nd Day Air
• carrier: USPS, UPS
• class: Standard, Expedited

general scoofilters:

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

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