K&N X-Stream Universal Clamp On Filter Fits 3.531 in (90 mm) (KNRX-4140)
SKU: 85862825660

K&N X-Stream Universal Clamp On Filter Fits 3.531 in (90 mm) (KNRX-4140)

Sale price$114.75 Regular price$127.50
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Description

K&N X-Stream Universal Clamp On Filter Fits 3.531 in (90 mm) (KNRX-4140)KNRX 4140 3 1 2 X STREAM FILTER 5. 969 in (152 mm) H x 4 in (102 mm) OD KNRX 4140 Part Number: KNRX 4140 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

KNRX-4140 - 3-1/2 X-STREAM FILTER

5.969 in (152 mm) H x 4 in (102 mm) OD - KNRX-4140

Part Number: KNRX-4140

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 moulded 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.

Part KNRX-4140 Product Specifications
Product Style: Round Straight Universal Air Filter
Air Filter Shape: Round
Filter Material: Cotton Gauze
Flange Inside Diameter: 3.531 in (90 mm)
Flange Length: 0.719 in (18 mm)
Flanges: 1
Flange Type: Centered
Height: 5.969 in (152 mm)
Outside Diameter: 4 in (102 mm)
Top Material/Finish: None
Top Style: X-Stream
Filter Re-Oiling Amount: 0.54 oz (16 ml)
Footnote 1: Base Has 25/64" Vent

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 85862825660

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CustomerK
San Leandro, US
★★★★★ 4
9/10
Color: Mocha Brown
Better than expected
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Reviewed in the United States on July 24, 2025
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Kassidi
Bozeman, US
★★★★★ 5
Lots of storage but compact look
Color: Mocha Brown
I was looking for something for my corporate 9-5 and was over a tote bag. This is perfect! It fits so much without it feeling or looking bulky. Love the amount of storage it has and I think it would even be a good travel bag
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Reviewed in the United States on March 13, 2026
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Kari
Grantham, US
★★★★★ 1
Defective
Super cute bag, unfortunately it was less than functional. The main zipper cannot zip up completely, as it has been sewn incorrectly.
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Reviewed in the United States on November 17, 2025
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Amazon Customer
Cuba, US
★★★★★ 5
Leather Backpack
Great backpack for the price. It’s not too bulky and it’s stylish.
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Reviewed in the United States on January 8, 2026
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Lala29
Cuba, US
★★★★★ 3
My bag strap pulling out.
Color: Camel, Color: Camel
I got this bag as a gift from July and started using it in the middle of September for work. I love it but the left strap is pulling off. I am very disappointed.
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Reviewed in the United States on September 28, 2025

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