Description
The K&N RX-4120-1 XStream Top Universal Air Filter is designed to enhance air flow and filtration efficiency. Featuring a unique filter within the filter’s top, this air filter increases the filter area, allowing for higher air flow and a longer service interval. K&N is known for delivering exceptional performance, making this filter a reliable choice for those seeking improved air delivery.
This air filter is constructed with ultra-strong molded pliable rubber flanges that absorb vibration, ensuring a secure attachment. The flanges can also be stretched for up to 1/16 inch (1.5mm) to accommodate different sizes, providing versatility in installation. Additionally, the K&N RX-4120-1 is washable and reusable, making it an environmentally friendly option that can be maintained for extended use.
Features
- Filter within the filter design for increased air flow
- Molded pliable rubber flanges for secure attachment
- Flanges can stretch for up to 1/16 inch (1.5mm)
- Washable and reusable for long-lasting performance
- Designed to provide enhanced filtration efficiency
Frequently Asked Questions
What is the main benefit of the K&N RX-4120-1 air filter?
The main benefit is the increased air flow and filtration efficiency due to its unique design.
Can the K&N RX-4120-1 air filter be reused?
Yes, this air filter is washable and reusable, allowing for extended use.
How do the flanges of the K&N RX-4120-1 work?
The flanges are made of molded pliable rubber that absorbs vibration and can stretch for up to 1/16 inch (1.5mm) to fit different sizes.
Manuals & Instructions
âš WARNING (California Proposition 65): WARNING: Cancer and Reproductive Harm – www.p65warnings.ca.gov

Not CARB approved. This item is not legal for sale or use on pollution-controlled motor vehicles in California or states that adopt California emissions standards. Intended for off-road / competition use where permitted by law.
















