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K&N Universal X-Stream Clamp-On Air Filter 3.313in Flg ID/4.875in Base OD/4in Top OD/4.25in H

K&N Universal X-Stream Clamp-On Air Filter 3.313in Flg ID/4.875in Base OD/4in Top OD/4.25in H

KNNRX-4120-1

⚠️ CARB Compliance: This product is not CARB-approved and cannot be shipped to California or other carb restricted states. See our Privacy Policy »
$146.99
$146.99
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This part is made to order only, contact us for rough ETA.

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K&N XStream Top Universal Air Filters take performance to the next level with the addition of a filter within the filter's top adding more filter area for higher air flow and a longer service interval. The XStream Air Filter provides awesome air flow and outstanding filtration. When racing, in any environment, racers need all the protection and airflow they can get. K&N delivers. All K&N universal air filters are constructed with ultra-strong molded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.
Installation Instructions
Installation Instructions
MPN: RX-4120-1
⚠️ Proposition 65 Warning: This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. Learn more »
K&N Universal X-Stream Clamp-On Air Filter 3.313in Flg ID/4.875in Base OD/4in Top OD/4.25in H

$146.99

FAQ

When does my order ship?

Most orders ship in 1–3 days, but some items may take longer due to demand and manufacturing delays. For urgent orders, please contact us to confirm stock before purchasing.

Are returns accepted?

Not satisfied? Return any item within 30 days. See our FAQ page for details.

Buy now pay later options available?

Yes. Pay later in installments with Affirm or PayPal Pay Later.

Do we offer price matching?

We’re happy to price match any legitimate listing from an authorized dealer, as long as the item is in stock and the price is current. We cannot match outdated or incorrect discounts based on old MSRP, since those prices are often errors the competitor cannot honor.