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K&N HA-4509XD Be the first to review!
Replacement Filters > Replacement Air Filter

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HA-4509XD
 
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K&N XStream Series Motocross Air Filters take performance to the next level with the addition of a filter within the filter's top in order to add even more filtration area for high air-flow and capacity. Each filter piece has pleated media which creates a large surface area that provides high airflow and great dirt holding capacity for extreme conditions. The two-piece design eases installation and removal on modern narrow-framed MX bikes. The epoxy-coated aluminum wire mesh, incorporated into a backfire screen, protects the filter element from harmful debris. A custom base seal ensures a precise and secure fit. K&N air filters are washable and re-usable and they come pre-oiled and ready to use!

More Info on K&N Xstream Series Performance Motocross Air Filters
  • Large surface area for long service life
  • Low restriction
  • Washable and reusable
  • Outstanding filtration
Available Information
HA-4509XD Cross Reference
Installation Instruction Sheet
HA-4509XD Vehicle Applications
Video Installation Video
News Story - K&N Extreme Duty Air Filters Provide Protection and Performance in High Dust Areas


Part HA-4509XD Product Specifications
Product Style: Unique Air Filters
Air Filter Shape: Round Tapered
Filter Material: Cotton Gauze
Flanges: None
Height: 4.5 in (114 mm)
Package Contents: 1 Air Filter
Package Quantity: 1
Weight: 1.5 lb (0.7 kg)
Product Box Length: 9 in (229 mm)
Product Box Width: 4.63 in (117 mm)
Product Box Height: 9 in (229 mm)



Customer Feedback      Be the first to review part HA-4509XD

After all the issues I hear online about K&N, I thought I should just try one out for myself and see what's the real truth.  I noticed a difference right after installation. It seemed to really help out in the low mid range I changed it out from my foam filter after riding for about 30min so I really did notice it once installed.

Thank you!

Blake Weaver

Blake Weaver, California
This product is simply perfect for my new Honda. Easy installation took about fifteen minutes. And I love the improvement from installing this new filter. Subtle but definitely noticeable!
Zach, North Dakota
As a long time K&N customer I use their filters (oil & air) in all my vehicles. When I acquired my new Honda Accord Hybrid installing a K&N air filter was a no-brainer. The car's not complete without the K&N sticker on the air cleaner housing.
Dave Strom, South Boston, Virginia