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  • K&N Universal Rubber Filter 2 1/2inch Flange 3 1/2inch OD 4 inch Height
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K&N Universal Rubber Filter 2 1/2inch Flange 3 1/2inch OD 4 inch Height

K&N Engineering
KNNRD-0700
In stock
Air Filters - Universal Fit
$52.99
K&N Universal Clamp-On Air Filter: 2.5" Flange, 3.5" OD, 4" Height Boost airflow and performance with the K&N Universal Clamp-On Rubber Air Filter (2.5" Flange,...
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$52.99
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K&N Universal Rubber Filter 2 1/2inch Flange 3 1/2inch OD 4 inch Height
Description

K&N Universal Clamp-On Air Filter: 2.5" Flange, 3.5" OD, 4" Height

Boost airflow and performance with the K&N Universal Clamp-On Rubber Air Filter (2.5" Flange, 3.5" OD, 4" Height). Washable, reusable, and built for custom setups.

The K&N Universal Clamp-On Rubber Air Filter is engineered to deliver high airflow while providing exceptional engine protection. Constructed with multiple layers of premium oiled cotton gauze media, this filter optimizes oxygen intake to enhance horsepower and acceleration compared to restrictive factory paper filters.

Featuring a flexible, ultra-strong molded rubber flange, it effectively absorbs engine vibration while providing a tight, secure seal. The pliable flange can stretch up to 1/16 of an inch (1.5mm) to accommodate minor variances in intake pipe sizing. Designed for longevity, this filter is fully washable and reusable—simply clean and re-oil it using a K&N Recharger kit for a lifetime of dependable performance.

Best Uses

  1. Custom Automotive Intakes: Perfect for custom-fabricated cold air or short ram intake systems on street and track cars.
  2. Motorcycles & ATVs: Ideal performance upgrade for custom bike builds, quad bikes, and off-road setups requiring compact filtration.
  3. Powersports & Snowmobiles: High-airflow filtration for snowmobiles, go-karts, and light racing vehicles.
  4. Industrial & Outdoor Power Equipment: Excellent replacement filter for generators, lawn tractors, and small utility engines.
  5. Small Engine / DIY Projects: Great for radio-controlled cars, custom turbos, and small engine conversions needing a 2.5-inch inlet.

Features

  1. High-Flow Cotton Media: Features 4 layers of pleated, oiled cotton gauze to maximize airflow while trapping dirt and contaminants.
  2. Pliable Molded Rubber Flange: Built with a durable rubber neck that damps vibration and stretches up to 1/16" (1.5mm) for a tight, custom fit.
  3. Clamp-On Design: Direct clamp-on construction with an integrated mounting flange makes installation quick and simple with basic hand tools.
  4. Precision Dimensions: Specs include a 2.5-inch flange inner diameter, a 3.5-inch outer body diameter, and a compact 4-inch overall height.
  5. Washable & Reusable: Designed to be cleaned and re-oiled repeatedly, eliminating the need for single-use paper filters.

Benefits

  1. Increased Horsepower & Acceleration: High-volume airflow reduces intake restriction, allowing your engine to generate more power.
  2. Long-Term Cost Savings: Reusable design means you buy it once, avoiding repeated purchases of disposable OEM filters.
  3. Engine Protection: Premium filter media blocks harmful road dust, debris, and contaminants to safeguard engine longevity.
  4. Vibration-Resistant Fit: The flexible rubber flange absorbs engine movement and prevents air leaks even under harsh operating conditions.
  5. Eco-Friendly Choice: Reduces environmental waste by keeping hundreds of disposable paper filters out of landfills.
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1. Shipments to the Contiguous 48 US States Orders $149.99 and over qualify for our fast free shipping offer. We have worked with our shipping companies and integrated their shipping prices with our website for customer comfort.

2. Please see our International Orders page for orders shipping outside the US. We have worked with our shipping companies and integrated their shipping prices with our website for customer comfort.

3.For a specific delivery ETA based on the exact item(s) you want to purchase, please call us at (248) 832-2444 or message us via Chat before placing an order.

Returns:

1. Returned products must be in new, unused condition and include the original box and/or packaging with all tags included.

2. Once your return is received and inspected by MotoKarMax (usually within 48-72 hours of receiving), your refund will be processed and a credit will be applied to your credit card or original payment method. Please note that depending on your credit card company, it may take an additional 2-10 business days after your credit is applied for it to be posted to your account.

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