HA-4509XD Image

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

 List Price: $131.00
Your Price: $89.99

You Save 31.3%

Find a Local K&N Dealer


       

HA-4509XD
 
In Stock & Ready to Ship!
 Free Ground Shipping!


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 found the K&N replacement filter to be of superior quality and even made my 2012 Honda run smoother and more responsive to the throttle. Saves on gas too.
George, Long Island, New York
I had a very frustrating experience with our local [brand] dealer. I had requested a new air filter at 30K miles they said they blow it out so you don't need a new one. At 41K miles I asked for a new air filter because my mileage had dropped nearly 3 mpg. I was patted on the head and told not to worry about it. When I came home, I popped the hood and saw that the air filter cover was still dusty and knew that nobody had even pulled the cover. I took the cover off and found lots of bird feathers from a bird I hit up on the Delta in early February, Harlequin butterfly wings from April and dust bunnies big enough to easily lift off by hand. I should have taken a picture, but instead, I pulled the air filter, blew it out with my compressor and reinstalled it. Then I did what I should have done when I first bought the car, I came in and ordered a K & N air filter it arrived in two days and I installed it immediately. I could hear the big difference the car could breath again! I had had a K & N air filter in my old '93 Honda, so I was well aware of the improved performance. My mileage is back up to where it ought to be, and having lost confidence in the dealership, I take my car to another shop! Thank you for your great products!
Aletha S. Eyre, Ridgecrest, California