★★★★★ 5
"Head" of the house gift...
Color: Black
Great fabric, nice fit..
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Reviewed in the United States on May 23, 2026
K&N Universal Rubber Filter 3 1/2inch Flange 3 1/2inch OD 4 inch Height
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Universal Rubber Filter 3 1/2inch Flange 3 1/2inch OD 4 inch HeightSKU: RD 0700 UPC: 024844008800 K&N RD 0700 Universal Clamp On Air Filter 3 1 2in Flange 3 1 2in OD 4in Height K&N RD 0700 delivers high flow filtration for racing vehicles radio controlled cars generators snowmobiles tractors and custom intakes regardless of angle or offset. This washable reusable filter with molded rubber flanges stretches up to 1 16 inch for secure clamp on fit and traps contaminants while increasing horsepower and acceleration. Pre
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Your K&N Universal Rubber Filter 3 1/2inch Flange 3 1/2inch OD 4 inch 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
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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]
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4.5 ★★★★★
Based on 1948 reviews
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Product Reviews
★★★★★ 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.
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Reviewed in the United States on April 16, 2026
★★★★★ 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.
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Reviewed in the United States on November 21, 2025
★★★★★ 5
Feels refreshing on the head…
Color: Black
I purchased a few of these on UA application. However, when I decided to put some more the UA app was out of stock.
I love the skull caps!! I use them for the gym and for work. They’re very comfortable and outstanding if you’re in a hot environment, sweat a lot or just want to be cooler.
They haven’t slipped at all and it’s great value for what I spent!
So far I have seven in total. I may purchase three more shortly before summer hits that way I can use one at the gym and one at work per day and don’t have to worry about doing my laundry just to have clean skull caps.
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Reviewed in the United States on February 2, 2026
★★★★★ 5
The perfect sock!
Size: 6-10, Color: Halo Gray/Assorted
The only socks that I can wear with my hey dudes. They stay on my ankles and never slid down into the shoe. I will forever order these as long as they are available. They are comfy too!
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Reviewed in the United States on August 21, 2025
