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K&N Universal X-Stream Clamp-On Air Filter RX-4040-1
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$395.20
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$98.80
In stock at 1 of our locations
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Free NZ shipping
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12 month warranty on all parts
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NZ WOF compliant
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Fitting available NZ wide
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.
Pleated filter built in top
Washable and reusable
Low restriction
Clamp-on design
Product Specifications:
Air Filter Shape Round
Base Outside Diameter 4 in (102 mm)
Filter Material Cotton Gauze
Filter Re-Oiling Amount 0.62 oz (18 ml)
Flange Inside Diameter 2.438 in (62 mm)
Flange Length 0.75 in (19 mm)
Flange Type Centered
Flanges 1
Footnote 1 1/4-20 Jack Nut Into Top
Footnote 2 Base Has 25/64" Vent
Height 4.75 in (121 mm)
Outside Diameter 4 in (102 mm)
Package Contents 1 Air Filter
Pleated filter built in top
Washable and reusable
Low restriction
Clamp-on design
Product Specifications:
Air Filter Shape Round
Base Outside Diameter 4 in (102 mm)
Filter Material Cotton Gauze
Filter Re-Oiling Amount 0.62 oz (18 ml)
Flange Inside Diameter 2.438 in (62 mm)
Flange Length 0.75 in (19 mm)
Flange Type Centered
Flanges 1
Footnote 1 1/4-20 Jack Nut Into Top
Footnote 2 Base Has 25/64" Vent
Height 4.75 in (121 mm)
Outside Diameter 4 in (102 mm)
Package Contents 1 Air Filter
Shipping Information
Most orders land in 5–12 business days. We'll keep you updated at every step of the journey.
The Kren Bits journey:
- Order received — Day 0
- With fulfilment — Day 1–2
- Heading to courier — Day 2–4
- Shipped — Day 3–7
- Almost there — Day 5–10
- Delivered — Day 5–14
Where your part ships from:
Your order ships from the closest warehouse with available stock across our six-warehouse network — NZ, AU, TH, UK, US, and CN.
We email you at every real milestone — order received, with fulfilment, heading to courier, shipped, almost there, delivered. No chasing, no vague waits.
For more details, visit our Track Your Order page.
Product Enquiry
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4.8
★★★★★
23 reviews