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K&N X-Stream Air Filter
K&N X-Stream Air Filter

$70.37 - $143.90
15% Off - Save up to $25.39

Item #KNN0009

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55 Reviews
4.6 out of 5 stars
5 Star   44 4 Star   6 3 Star   1 2 Star   2 1 Star   2
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All Reviews
Verified Purchaser
Pittsfield, MA 01201, USA
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Style 5/5
K&N

this is a great filter, I have it on my 2007 honda crf 250r and it doesnt let anything in as long as you clean and oil it with K&N spray very free flow and makes a noticeable difference.

Verified Purchaser
Durability 5/5 Ease of Installation 3/5 Performance 5/5 Style 5/5

K&N filter is great! You feel the change in HP. Kind of a pain to install.

Verified Purchaser
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Braaapppp juice

I installed this k&n air filter on my 04 yz250 and noticed minor power gains, plus it's a breeze to clean and very durable.

Verified Purchaser
Colorado, USA
Durability 4/5 Ease of Installation 5/5 Performance 5/5 Style 4/5

Bought for my 08 crf450r and it increased throttle responsiveness. Great filter.

Verified Purchaser
Buena Park, CA
Durability 4/5 Ease of Installation 4/5 Performance 4/5 Style 4/5
Quality Product

Shipping was timely, installation was easy, and performance is great! I would recommend this filter for a YZ250 all day!

Redding, Ca
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Great Buy

Highly recommend. increase in throttle response an sound.

houston tx
Durability 1/5 Ease of Installation 5/5 Performance 1/5 Style 5/5
Loooooks great!

this is the best looking air filter ive had in my bike the colors match the bike perfect and all that and fits just right only problem is ive noticed it took my bike down about 4.2/3 horsepower so i would just stick with twin air this is only good if your lookin to show off your ride

Verified Purchaser
Doral , FL
Durability 5/5 Ease of Installation 4/5 Performance 5/5 Style 4/5
Air Filter

A excellent upgrade, to any bike. Would suggest purchasing KN filter oil with this product.

Mohnton PA
Easy power increase

I would definetly recommend this product. Not a gigantic power increase, but I could definetly tell some difference from my old foam filter.

Kenai, Alaska
Big power!

i bought the powercore 4 slip-on and purchase the powerbomb header separately, which made a full system. I purchased the K&N filter to compensate for the added exhaust, so i then had to re-jet and went with a FMF (DJ) jet kit. the K&N filter added incredible amounts of air flow and was easy to install, it lasts longer between cleans, and is very mess free when washing and oiling. with the combo of these three items my bike rips!

See 10 More Reviews
10 Questions
Answered:   10
Not Yet:   0
BrandonRideRed422
Q: I got a 06 crf 450 just wondering if this air filter is good for weather in Canada since it says California only
Over 9 months ago
hey just wondering on the impact of using this in Canada since its different climate then California and our dirt is very different as well
David
Top 10 Contributor
Over 9 months ago
A: No impact. Will work fine.
BrandonRideRed422
Q: Air filter
Over 9 months ago
hey i got and 06 crf 450 just wondering with using this filter in ontario Canada where its not dusty and dry will it have an impact on how the bikes runs since its for different environments
David
Top 10 Contributor
Over 9 months ago
A: This will work fine in Canada.
Gama305
Q: I have a 01 yz125 will this filter work or fits my bike?
2 years 5 months ago
MotoSportExpert
MotoSport Staff Expert
2 years 5 months ago
A: Yes. Just be sure to correctly select the Year/Make/Model of your bike before ordering so we can be sure to send you the correct filter for your bike. Also, feel free to give us a call at 888-676-8853 and we would be happy to help you out with your order.
EJcoco
Q: Does the k&n filter require the filter frame used with the foam filter
2 years 8 months ago
I don't have the filter frame that comes stock with my bike? I'm wondering if I need to purchase another frame to use this filter
MotoSportExpert
Expert MotoSport Staff
2 years 8 months ago
A: The stock air filter cage will not be used with the K&N Filtercharger. See instructions here:
http://www.knfilters.com/instructions/KA-2504_inst.pdf
sweet
Q: Will this fit on a 2005 CRF450X or does it just fit the R
Over 9 years ago
JesseC
MotoSport Staff
Over 9 years ago
A: no this will only fit the 450R. K&N does not make an air filter for the 450X at this time.
Fuzzybutkiss
Q: Is this a good enough filter for use in sand?
Over 9 years ago
Drewski
MotoSport Staff
Over 9 years ago
A: Personally I wouldn't run this filter in the sand unless I had an outerwear on it.
dylankx250f
Q: Will i have to change my jetting specs
Over 9 years ago
Drewski
MotoSport Staff
Over 9 years ago
A: Most likely, it depends on where you are located and what you have done to your bike. I would install the filter and see how the machine responds to it and then take it from there.
MatadorMkV
Q: What's the bottom line on these?
Over 10 years ago
Many claim that they pass too much dirt to be used safely on bikes such as a CRF450R. Any truth to this? What do the experts really think?
Drewski
MotoSport Staff
Over 10 years ago
A: As long as you stay up on the maintenance and keep it oiled up you shouldn't have any issues with dirt sucking through. I wouldn't recommend this filter in the sand though. And just as an extra precaution you can always pick up a filter skin to help block out the elements.
moto685
Q: Can you use k&n car filter oil?
Over 10 years ago
james718
MotoSport Staff Expert
Over 10 years ago
A: Unfortunately we only sell the off-road filters and not the automobile filters. They are different divisions within their company. I do know they use the same material to construct the filters whether its for 2 or 4 wheel. So why wouldn't the same filter cleaner and oil be used used for either application. But to be safe I would contact K&N directly and ask them.
EBJR
Q: How is the filter cleaned?
Over 10 years ago
patrick77
MotoSport Staff Expert
Over 10 years ago
A: Best thing to do is get the K&N cleaning kit and follow the instructions. That's what K&N recommends and it keeps all applicable warranties in place.
almstfamus74
Over 10 years ago
A: take it out, run the hose over it. make sure to get all debris and everything else out. let it dry to where it is dryyy. dont use it wet. everrr. then spray the k&n cleaning kit grease spray. on it. let it dry for i think like 30 mins? then reseal it and ur ready to ride. have fun!
Fitment
See all bikes that this part fits...
See Fitments
# Part Numbers
Product Variant Manufacturer Part #
K&N X-Stream Air Filter HA-2505XD
K&N X-Stream Air Filter KT-4511XD
K&N X-Stream Air Filter YA-4514XD
K&N X-Stream Air Filter HA-4503XD
K&N X-Stream Air Filter HA-4509XD
K&N X-Stream Air Filter KA-2506XD
K&N X-Stream Air Filter KA-2504
K&N X-Stream Air Filter YA-4503
K&N X-Stream Air Filter YA-2506XD
K&N X-Stream Air Filter YA-4510
K&N X-Stream Air Filter HA-4513XD