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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]
Available Information
HA-4509XD Cross Reference
Installation Instruction Sheet
Video Installation Video
News Story - K&N Extreme Duty Air Filters Provide Protection and Performance in High Dust Areas
HA-4509XD Vehicle Applications


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)



Accessories
99-5050.jpg
99-5050 - Filter Care Service Kit - Squeeze

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 recently purchased the K&N drop-in filter for my '13 Honda CR-Z and love it. Before installing the filter I logged my car's performance using Torque, and then again after installing the filter. The difference in performance was not only noticeable within Torque, but I can feel the difference while driving.
Michael, Ohio
The fit was not perfect, it was a little too big but still fit with a little convincing. It really woke my 2000 Honda Shadow VLX600 up. I was really impressed with how much of an improvement it was. I would buy another K&N filter.
David, Latrobe, Pennsylvania

K&N HA-4509XD fits the following:
2013 HONDA CRF250R 250 - All
2012 HONDA CRF450R 444 - All
2012 HONDA CRF250R 250 - All
2011 HONDA CRF450R 444 - All
2011 HONDA CRF250R 250 - All
2010 HONDA CRF450R 444 - All
2010 HONDA CRF250R 250 - All
2009 HONDA CRF450R 444 - All