K&N Air filter fitting Klx 250S

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Old Oct 13, 2021 | 04:45 PM
  #1  
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Default K&N Air filter fitting Klx 250S

Hi. Just recently I became interested in improving my Klx performance. Among the first things I'd like to do is to change the air filter. Would this K&N fit a Klx 250S 2018?

Amazon Amazon





Thanks for your help.
 

Last edited by Danielcr8808; Oct 13, 2021 at 04:50 PM.
Old Oct 13, 2021 | 05:28 PM
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Looks about right to me but there's no part number to verify.
 
Old Oct 13, 2021 | 05:39 PM
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OP, do you intend to ride off road very much? I think evidence suggests that properly oiled foam filters are still the best where much dirt might be encountered. There's lots of hoopla and naysayers about K&N fabric filters, and a lot of it is exaggerated and full of bias. I'll stay away from that debate for the moment. If you're going to be riding pavement with an occasional dirt road, then the K&N work just fine. If you're going to be riding any decent amount of dirt or doing dirt road riding with other riders or traffic present...more airborne dirt particles...do yourself a favor and just stay with washable foam filters.
 
Old Oct 13, 2021 | 06:15 PM
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Originally Posted by TNC
OP, do you intend to ride off road very much? I think evidence suggests that properly oiled foam filters are still the best where much dirt might be encountered. There's lots of hoopla and naysayers about K&N fabric filters, and a lot of it is exaggerated and full of bias. I'll stay away from that debate for the moment. If you're going to be riding pavement with an occasional dirt road, then the K&N work just fine. If you're going to be riding any decent amount of dirt or doing dirt road riding with other riders or traffic present...more airborne dirt particles...do yourself a favor and just stay with washable foam filters.

Absolutely true. You do not see any MX/SX or off road racers running K&N. Those who know do run foam filters. Flat trackers often run K&N for maximum air flow, but when running a really dusty track they will run the K&N filter wraps to filter out the finer silt.
 
Old Oct 13, 2021 | 06:16 PM
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Originally Posted by Brieninsac
Looks about right to me but there's no part number to verify.
TY.

Originally Posted by TNC
OP, do you intend to ride off road very much? I think evidence suggests that properly oiled foam filters are still the best where much dirt might be encountered. There's lots of hoopla and naysayers about K&N fabric filters, and a lot of it is exaggerated and full of bias. I'll stay away from that debate for the moment. If you're going to be riding pavement with an occasional dirt road, then the K&N work just fine. If you're going to be riding any decent amount of dirt or doing dirt road riding with other riders or traffic present...more airborne dirt particles...do yourself a favor and just stay with washable foam filters.
Yeah, this is mostly my case. The moment I start riding off road again on a daily basis, I will make sure to change it back to the OEM one, or another foam one.

 
Old Oct 13, 2021 | 08:23 PM
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Originally Posted by Danielcr8808
Hi. Just recently I became interested in improving my Klx performance. Among the first things I'd like to do is to change the air filter. Would this K&N fit a Klx 250S 2018?

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1





Thanks for your help.

My son wanted one for his 2012 or 2013, can't remember what year. Looked exactly the same as your picture. We purchased it from MotoSport and in the description it said it would fit his bike. It did not, so we returned it.

https://www.motosport.com/kn-air-fil...ce=pdp&variant[KNN0001]=KNN0001-X001-Y433
 
Old Oct 13, 2021 | 09:11 PM
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How tight it is for the foam filter I don't know how a K&N would ever fit in there. Fortunately I don't plan to put one in so it really doesn't matter to me.
 
Old Oct 14, 2021 | 01:16 AM
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Originally Posted by klx678
How tight it is for the foam filter I don't know how a K&N would ever fit in there. Fortunately I don't plan to put one in so it really doesn't matter to me.
LOL!...I was wondering the same thing. It's a tight fit with a foam filter and cage even where you can kind of squeeze the cage.
 
Old Oct 14, 2021 | 02:32 AM
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I think I won't be getting the K&N then. Which one would be an upgrade compared with the oem? Hiflo? Twin Air? Any specific reference of these two that would fit in the 2018 model?

Thanks for all your inputs, by the way.
 
Old Oct 14, 2021 | 02:40 AM
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Which ever is cheapest then buy two. Oil both up, put one in and put the other in a gallon plastic zip lock bag for the next time you remember you want to put on a clean filter, the night before you plan to go riding.
 
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