K&N Universal Custom Air Filter - Oval Shape 9.313in OD / 2.375 Height

K&N Universal Custom Air Filter - Oval Shape 9.313in OD / 2.375 Height

Marsoni

M251S

$68.99

Get it in 3 business days with 1 day shipping. Friday, May 29

K&N Universal Custom Air Filter - Oval Shape 9.313in OD / 2.375 HeightThe K&N replacement air filter for RK Series air cleaner assemblies is designed to increase horsepower and acceleration while providing excellent filtration. The air filter is washable and reusable and designed to be used as a replacement air filter for specific K&N RK Series air cleaner assemblies for Harley Davidson motorcycles. The air filter is covered by the famous K&N Million Mile Limited Warranty.

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This seems to work very well. I will say that it seems to be pretty important to move the wheel around as soon as you can to distribute the product within the tire. I was held up for a few minutes and the Liqui tube seemed to start to set up in one spot and made the tire out of balance so I had to work quick to get it to distribute to the other parts of the tire. It seems to have worked though and so far the tires are holding air very well. I will be interested to see if it lasts for a long time but so far so good.

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Reviewed in the United States on May 18, 2026