Description
The K&N RX-4860 XStream Top Universal Air Filter is engineered to elevate performance with its unique filter design that incorporates an additional filter within the top. This innovative feature increases the filter area, allowing for higher air flow and longer service intervals. K&N’s commitment to quality ensures that this air filter meets the needs of racers and enthusiasts alike.
With its ultra-strong molded pliable rubber flanges, the RX-4860 absorbs vibration while providing a secure attachment. The flanges can be stretched for up to 1/16 inch (1.5mm) to accommodate different sizes, making installation straightforward. This air filter is both washable and reusable, offering a sustainable solution for those who demand performance without frequent replacements. Whether in competitive racing or other high-demand environments, the K&N RX-4860 delivers reliable air filtration to support optimal engine performance.
Features
- Constructed with ultra-strong molded pliable rubber flanges
- Flanges can be stretched for up to 1/16 inch (1.5mm)
- Washable and reusable design
- Increased filter area for higher airflow
- Longer service intervals
- Designed for outstanding filtration
Frequently Asked Questions
What is the part number for this air filter?
The part number is RX-4860.
Is the K&N RX-4860 air filter washable?
Yes, it is washable and reusable.
What material are the flanges made from?
The flanges are made from ultra-strong molded pliable rubber.
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.
















