K&N X-Stream Air Filter

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

$69.99 - $133.99
19% Off - Save up to $32.30

Description See Also: 54 Reviews 8 Questions Fitment
Item #KNN0009

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54 Reviews
4.6 out of 5 stars
5 Star   43 4 Star   6 3 Star   1 2 Star   2 1 Star   2
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All Reviews
Mike 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.

MagicMan 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.

redteamracing 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.

BigKahuna Verified Purchaser Featured
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

zhou 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!

Great air filter!

K&N does it again with this great product. It fit great and increased horsepower. This filter is simply the best.

new orleans
Great buy

This K&N airfilter is awsome

well right out of tha box into the bike pre oiled just aplly sealing grease 5min easy instilation,clean seal an smother throttle respons.didnt expect it would make the difference it made.an not to mention motosport has the best shipping,never past time of arrival an havent had any damaged products yet

falmouth mi

worst product for the money really expensive will not stop dirt particles from entering it will let it go right through the carb and into the head causing you to replace your entire top end costing you about 2,000 dollars worst product made never again will i ever purchase a K&N...

yaboipb5 Featured
Fort dodge, IA

Great product.... i notice a increase in overall powner top and bottom end. easy mantience and installing instructions. i would recommend this product to any rider thats looking to take a step closer in the airfilter department on their bike.....dislikes... none as of now. my small town local dealer didnt carry the product but motosport had in covered.

J-Vegas, NC
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Awesome Improvement

Installation was a breeze b/c the top is a separate piece and it comes with the filter rim grease. i even had to turn the idle down a couple clicks.

Sacramento, CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Sick buy

Thisair filter is very easy to clean and maintain. This is the top air filter ever.

YamahaZach Top 250 Contributor
Santa Barbara CA
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5

Very pleased to find a K&N for my yzf. As with my little 50 just woke it up. Breaths like your running no filter at all. Great buy.

haff10 Featured
Durability 5/5 Ease of Installation 5/5 Performance 4/5 Style 5/5
Buy this!

i was told that this airfilter would increase power in my bike and it did just that. its a really big difference just coming from an air filter, i am really impressed with it. its extremely easy to clean and it makes your bikes throttle response so much better. it actually helps the sound a little bit too. great product, i will only use K&N airfilters from now on

Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5
Best Air Filter Ever

I love this air filter it is so easy to clean and gave my bike alot more power, didnt like the price tag but well worth it. Good Buy, Thanks Moto Sport

Long Branch, NJ
Durability 5/5 Ease of Installation 5/5 Performance 5/5 Style 5/5

This is the best filter ever, really easy to clean, and put back, and give me on my CRF250R more power, the best for all riders....

Orange Park, FL
Kn gives you wings

This air filter fits perfectly over your stock airbox opening to ensure no dirt gets into your carb intake...you get a good seal over the airbox so it picks up all the debris! I noticed significant throttle response once it was put on and even more so coupled with an aftermarket exhaust......you may consider re-jetting your carb once you install!

See 20 More Reviews
8 Questions
Answered:   8
Not Yet:   0
Q: I have a 01 yz125 will this filter work or fits my bike?
Over 10 months ago
Expert MotoSport Staff
Over 10 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.
Location: California
Q: Does the k&n filter require the filter frame used with the foam filter?
1 year 1 month 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
MotoSport Staff Expert
1 year 1 month ago
A: The stock air filter cage will not be used with the K&N Filtercharger. See instructions here:
Q: Will this fit on a 2005 CRF450X or does it just fit the R?
Over 7 years ago
MotoSport Staff
Over 7 years ago Location: Tualatin
A: no this will only fit the 450R. K&N does not make an air filter for the 450X at this time.
Q: Is this a good enough filter for use in sand?
Over 8 years ago
MotoSport Staff
Over 8 years ago Location: Portland, OR
A: Personally I wouldn't run this filter in the sand unless I had an outerwear on it.
Q: Will i have to change my jetting specs?
Over 8 years ago
MotoSport Staff
Over 8 years ago Location: Portland, OR
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.
Location: Acme, PA
Q: What's the bottom line on these?
Over 8 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?
MotoSport Staff
Over 8 years ago Location: Portland, OR
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.
Q: Can you use k&n car filter oil?
Over 8 years ago
MotoSport Staff Expert
Over 8 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.
Location: Ventura County CA
Q: How is the filter cleaned?
Over 8 years ago
MotoSport Staff Expert
Over 8 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.
Top 1000 Contributor
Over 8 years ago Location: Mesa AZ
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!
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