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K&N 09-21 Kawasaki KLX250S/SF / KLX300/R/SM Replacement Air Filter
K&N 09-21 Kawasaki KLX250S/SF / KLX300/R/SM Replacement Air Filter
K&N 09-21 Kawasaki KLX250S/SF / KLX300/R/SM Replacement Air Filter
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K&N 09-21 Kawasaki KLX250S/SF / KLX300/R/SM Replacement Air Filter

Marsoni M251S
Sale price$95.82
Pay 4 payments of $23.95 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
K&N 09-21 Kawasaki KLX250S/SF / KLX300/R/SM Replacement Air FilterK&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
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Your K&N 09-21 Kawasaki KLX250S/SF / KLX300/R/SM Replacement Air Filter orders ship within 1-2 business days.

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  • Standard: 3-7 business days
  • Fast: 2-3 business days
  • Express: 1-2 business days

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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 1992 reviews
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Product Reviews
F
Verified Purchase
Frank Guerrero
Lowell, US
★★★★★ 5
Great product!
Color: Black
Use this under my hard hat to keep from sliding everywhere. I have bought several over the years and this have been my favorite so far. Will definitely buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 13, 2026
P
Verified Purchase
Placeholder
Chelsea, US
★★★★★ 4
Good but if the elastic band were wider it would be great
Color: Black
This is a great under helmet or perspiration barrier for the face during heavy spinning workouts. Sadly to avoid an indentation to your forehead, you must wear it inside out because the sewing band is narrow and tight.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 3, 2026
C
Verified Purchase
Cassandra
Bozeman, US
★★★★★ 5
"Head" of the house gift...
Color: Black
Great fabric, nice fit..
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
A
Verified Purchase
Amazon Customer
Boise, US
★★★★★ 1
Too damn small
Color: Black
Way too small for an adult. It doesn't even fit my 11 year old. Unfortunately I didn't open it immediately or I would have returned it. Now I'm stuck with something nobody in my house can use.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 16, 2026
O
Verified Purchase
OBG
Lake Worth, US
★★★★★ 3
One size definitely doesn’t fit. Otherwise Ok.
Color: Black
OSFM - one size fits most. It should be OSFS - one size fits small/some. Measured my head size and according to their chart I’m l/XL. This cap is tight fitting and gives you a headache after an hour. Otherwise it’s fine. Keeps your head cool, is absorbent and works well under a helmet.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 21, 2025

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