enquiry@2to4wheel.com

Text - +1 248 832 2444

Customer Service About Contact Blog Rewards Program
Wish Lists
0 My Cart

Your cart is currently empty.

Continue shopping
Total: $0.00
View cart
Toggle menu
0
  • Home
  • K&N Custom Racing Air Filter - Rectangular Carbon Fiber 4in Air Box w/ 2.75in Air Horn
Photo - Primary img 1
Photo - Primary img 2
Photo - Primary img 3
Photo - in package img 4
Photo - in package img 5
Photo - in package img 6
Photo - in package img 7
Photo - in package img 8
Photo - in package img 9
Photo - in package img 10
User 4
User 4
User 4
Logo Image
Click to zoom in
Load image into Gallery viewer, Photo - Primary img 1
Load image into Gallery viewer, Photo - Primary img 2
Load image into Gallery viewer, Photo - Primary img 3
Load image into Gallery viewer, Photo - in package img 4
Load image into Gallery viewer, Photo - in package img 5
Load image into Gallery viewer, Photo - in package img 6
Load image into Gallery viewer, Photo - in package img 7
Load image into Gallery viewer, Photo - in package img 8
Load image into Gallery viewer, Photo - in package img 9
Load image into Gallery viewer, Photo - in package img 10
Load image into Gallery viewer, User 4
Load image into Gallery viewer, User 4
Load image into Gallery viewer, User 4
Load image into Gallery viewer, Logo Image
Video
Instruction
Warranty

Have Questions?

1.248.832.2444 Ask an Experts

  • Guaranteed Fitment

    Always the correct part

  • In-House Experts

    We know our products

  • Added Value

    Ask Us How!

  • Wordwide Delivery

    We proudly deliver to our customers and businesses worldwide

K&N Custom Racing Air Filter - Rectangular Carbon Fiber 4in Air Box w/ 2.75in Air Horn

2 sold in last 8 hours
K&N Engineering
KNN100-8593
In stock
Air Filters - Direct Fit
$944.99
K&N Custom Racing Air Filter | Carbon Fiber Box & 2.75" Air Horn Boost performance with the K&N Custom Racing Air Filter. Featuring a rectangular...
Size Guide
$944.99
customers are viewing this product
K&N Custom Racing Air Filter - Rectangular Carbon Fiber 4in Air Box w/ 2.75in Air Horn
Description

K&N Custom Racing Air Filter | Carbon Fiber Box & 2.75" Air Horn

Boost performance with the K&N Custom Racing Air Filter. Featuring a rectangular carbon fiber 4-inch air box and a 2.75-inch air horn for maximum airflow and heat protection.

The K&N Custom Racing Air Filter is an elite-level induction solution designed for competitive racing and high-performance applications where every horsepower counts. This system features a lightweight, genuine carbon fiber air box that provides a rigid, heat-resistant housing for the filter element, ensuring the engine draws in cooler, denser air.

Integrated into the design is a precision-engineered 2.75-inch air horn, which smoothes and accelerates airflow into the intake tract. By reducing turbulence and maximizing velocity, this setup provides a significant advantage in throttle response and top-end power. Built with K&N’s legendary high-flow cotton media, this filter is washable, reusable, and engineered to withstand the rigorous vibrations and pressures of the track.

Best Uses

  1. Professional Racing: Ideal for drag, circuit, and autocross setups where weight reduction and airflow are critical.
  2. Custom Induction Systems: Perfect for fabricators building bespoke cold air intakes for high-performance builds.
  3. Track-Day Enthusiasts: Best for drivers looking to optimize air intake velocity and mitigate engine bay heat soak.

Features

  1. Real Carbon Fiber Housing: Delivers a high strength-to-weight ratio and superior thermal insulation.
  2. 2.75-inch Velocity Stack: Includes an integrated air horn to streamline airflow and increase air speed.
  3. High-Flow Cotton Media: Features K&N’s signature pleated oil-impregnated cotton for low restriction and high filtration.
  4. Rectangular 4-inch Profile: A compact, space-efficient design that fits into tight engine compartments.
  5. Washable & Reusable: Designed to be cleaned and re-oiled, lasting for the life of the vehicle.

Benefits

  1. Increased Horsepower: Minimizes intake restriction to allow the engine to breathe more efficiently.
  2. Enhanced Throttle Response: The air horn design reduces air turbulence for more immediate acceleration.
  3. Heat Soak Mitigation: The carbon fiber box shields the intake air from high engine bay temperatures.
  4. Long-Term Durability: Built to survive the extreme environments of racing without degrading.
  5. Premium Aesthetic: Provides a professional, high-end look to any performance engine bay.
Read More
Read Less

Shipping:

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.

Customer Reviews

Your cart

×