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K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in Height
K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in Height
K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in Height
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K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in Height

Marsoni M251S
Sale price$68.99
Pay 4 payments of $17.25 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in HeightK&N's high flow air filters are available as a replacement for your stock motorcycle air filter element. They are custom engineered to fit your specific application and are designed to provide low restriction and increased performance. Installation Instructions
Easy Shipping

Quick Dispatch:

Your K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in Height orders ship within 1-2 business days.

Delivery Options:

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

Order Tracking:

You'll receive a tracking link by email once your K&N Custom Air Filter Round 4.625in ID / 6in OD / 2.5in Height ships.

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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
4.8 ★★★★★
Based on 327 reviews
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Product Reviews
A
Verified Purchase
Aurajeanne
Charlottesville, US
★★★★★ 5
Perfect fit
This fit perfectly into my cabin air filter slot. Save me a lot of money, getting it off here as the mechanics went to charge so much more money just to slip this filter into your car. Anyone can do it so don’t hesitate to do your own cabin filter exchange and save yourself big bucks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026
N
Verified Purchase
Not bad. But as it is with Chinese carburetors the cold start.
Los Angeles, US
★★★★★ 4
Nice product
It’s good
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
S
Verified Purchase
Shouka
Fort Morgan, US
★★★★★ 5
It was a good fit
It was a good quality Thanks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 13, 2026
J
Verified Purchase
JB
Omaha, US
★★★★★ 5
DIY forget the dealer
DIY value
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026
M
Verified Purchase
Mike
Lake Worth, US
★★★★★ 5
Works
Decent quality, somewhat flimsy, not bad for the price. Fit perfectly, correct thickness.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 17, 2025

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