


K&N Universal Rubber Filter
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
K&N Universal Rubber FilterSKU: RU 3120 UPC: 024844010964 K&N RU 3120 Universal Clamp On Air Filter K&N RU 3120 delivers high flow filtration for racing vehicles radio controlled cars generators snowmobiles tractors and custom intakes with 2. 75 inch (70mm) flange diameter 1. 5 inch (38mm) flange length and 5 inch (127mm) filter length and height. Molded rubber flanges absorb vibration stretch up to 1 16 inch (1. 5mm) and clamp securely for reliable seal. Increases airflow for
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Your K&N Universal Rubber Filter 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.
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4.6 ★★★★★
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Product Reviews
★★★★★ 5
Great quality
Size: Large, Color: Black
Very high quality socks
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Reviewed in the United States on November 25, 2025
★★★★★ 4
Better than most
Size: Large, Color: White
I was so sad when my size of the woman’s specific no show invasion socks were sold out and there not making more. But these had around the same size, not uncomfortable, and a lot better then most I can find if still a step down from the previous. Still love them! A good buy
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Reviewed in the United States on October 2, 2020
★★★★★ 5
Great Purchase
Size: Large, Color: Black
I love these socks - they are comfortable, feeling cushiony without feeling or adding unnecessary bulk. Came on time - great purchase.
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Reviewed in the United States on June 16, 2025
★★★★★ 5
Seamless comfort
Size: Medium, Color: Black
Love the comfort and the design of the sock not have the bumps in the seam. Used to buy at the ASICS store but now can only find online.
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Reviewed in the United States on February 2, 2026
★★★★★ 5
Absolutely Essential for Any Athlete or Gym-Goer!
Size: Large, Color: (035) Steel / White / Black
I recently purchased the Under Armour Unisex-Adult Training Cotton No Show Socks 6 Pack, and I must say, they've become an indispensable part of my workout gear. Here's why these socks are a game-changer:
Comfort Above All: These socks are incredibly comfortable. Made from a blend of cotton and synthetic fibers, they provide just the right amount of cushioning without feeling bulky. Whether I'm running, lifting weights, or doing yoga, my feet feel supported yet free.
No Show, All Go: True to their name, these socks stay perfectly in place without slipping down into my shoes. This is crucial for maintaining a professional look at the gym or during sports activities. No more embarrassing sock peeks or having to constantly adjust them.
Durability: For the price, these socks hold up remarkably well. I've washed them multiple times, and they haven't lost their shape or elasticity. They've survived the rigors of both my workouts and laundry day.
Breathability: The material mix allows for excellent breathability. My feet stay dry and cool, reducing the chances of blisters or discomfort during long sessions.
Pack Value: Getting six pairs in one go is fantastic. It means I always have a fresh pair ready, which is perfect for someone like me who works out frequently.
Fit for All: These socks fit true to size and are designed to be unisex, making them a versatile choice for anyone looking to upgrade their sock game.
If you're in the market for socks that combine comfort, performance, and style, look no further. Under Armour has nailed it with these no-show socks. They've quickly become a staple in my wardrobe, and I find myself reaching for them over any other sock I own. Highly recommended for anyone serious about their fitness routine or just wanting reliable, high-quality socks.
5 out of 5 stars - These socks are a must-have!
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Reviewed in the United States on August 25, 2024
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