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Home / Intake & Filtration / Air Filters - Direct Fit / K&N 4in ID / 5.25in OD / 2in H Custom Assembly Filter designed to fit Harley-Davidson Motorcycles
K&N 4in ID / 5.25in OD / 2in H Custom Assembly Filter designed to fit Harley-Davidson Motorcycles
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K&N Engineering

K&N 4in ID / 5.25in OD / 2in H Custom Assembly Filter designed to fit Harley-Davidson Motorcycles

PART RK-320BCATEGORY Air Filters - Direct Fit
$179.99
$179.99
1

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Product information

Manufacturer information. Check the part number and installation requirements for your vehicle.

Supplier details checked 2026-09-23 · Test catalog

Some supplier details are unavailable for this product.

Product description

This K&N custom air cleaner was designed to fit Harley-Davidson motorcycles. This K&N air cleaner is not street legal nor recommended by Harley-Davidson Motor Co., Inc. .

Intake System-Harley Davidson

Custom Assembly Air Filter

Features

Washable and reusable air filter

Excellent engine protection

Designed to add power

Manufacturer notes

Associated products: E-3200 Round Air Filter, 99-5000 Filter Care Service Kit Aerosol

Supplier category
Air Filters
Supplier subcategory
Air Filters - Direct Fit
UPC / barcode
024844009364
Units per product
1
Supplier Proposition 65 status
Y
Supplier EPA status
N/A
Air freight prohibited
No
Not CARB approved
Yes
CARB acknowledgement required
Yes
Freight delivery required
No
Powersports product
Yes
More manufacturer information

Other product descriptions

K&N 4in ID / 5.25in OD / 2in H Custom Assembly Filter designed to fit Harley-Davidson Motorcycles

Air Intake System

About the manufacturer

K&N custom air cleaners are designed for use on older Harley-Davidson motorcycles. With proper carburetor calibration, these custom air cleaners can increase horsepower on your bike. Each custom air cleaner comes with a K&N high-flow air filter. These air cleaners are perfect for many applications, such as racing or off-roading. This custom air cleaner has a 2.625 in (67 mm) inlet and comes with one gasket. The back-plate is pre-drilled. Included is a dome-shaped chrome cover.

High air flow with excellent filtration

Additional manufacturer information

Air Cleaner Assembly

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K&N 4in ID / 5.25in OD / 2in H Custom Assembly Filter designed to fit Harley-Davidson Motorcycles | Q40 Motorsports