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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
I am please with the part. My Honda Civic LX 07 is a lot more responsive to the gas, gives me the extra push when needed and it sounds just right. Good product so far.
Daniel, Florida
Bought the filter for my new car, a 2014 Honda Accord Coupe, V-6. I have put K&N air filters in all my cars since about 2001. I find they increase top end power and help throttle response at lower rpms, and they usually improve gas mileage as well. Thanks for your great products.
Richard Haas, Van Wert, Ohio