EXPLORE THE BENEFITS

THE ORIGINAL RED AIR FILTER SINCE 1969


There’s a reason top racers trust K&N® to protect their trophy trucks in the Baja 1000, premium racecars in 24 Hours of Le Mans, million-dollar NASCAR engines, and high-horsepower dragsters: K&N® air filters let airflow in, and keep dirt out. Designed for the racetrack—made for your vehicle. Layered, oiled cotton media provides up to 50% more airflow than traditional paper air filters, which can provide an increase in horsepower. The durable filter frame and media is designed to last for the entire lifespan of your vehicle, and is protected by a 10-Year/Million Mile Limited Warranty.

Engineered to deliver performance
Extensively Tested
Built for Racers, by racers

Heightened Horsepower

We’re #1 for a reason. Since 1969 every product we’ve created delivers high-performance, unmatched quality and longevity

WASHABLE & REUSABLE


Unlike disposable filters which must be frequently replaced, K&N® High-Flow Air Filters™ are washable, reusable, and engineered to last for the life of your vehicle. Feel confident in your purchase with a 10-Year/Million Mile Limited Warranty.

INCREASE PERFORMANCE


High-flow cotton media is designed to allow up to 50% more airflow than traditional paper filters—and greater airflow can result in increased horsepower and torque. K&N® air filters are tested on a SuperFlow flow bench to ensure increased airflow over a stock filter. View testing data for many K&N filters on individual product pages.

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PROTECT YOUR ENGINE


K&N’s state-of-the-art filter features thousands of microscopic cotton fibers, and an innovative design of layered, oiled cotton media helps to capture dirt and shield your engine from contaminants. Each filter design is tested in an ISO 5011 laboratory to ensure excellent filtration efficiency for outstanding engine protection.

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landfill

REDUCE WASTE


Over 100 million disposable air filters and their packaging waste end up in landfills each year. Choosing a washable, reusable product that lasts for the lifespan of your vehicle helps to reduce unnecessary waste.

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INSTALLS EASILY


Engineered to fit easily into your factory air box as easily as any other air filter. Typically installs in less than five minutes with no tools necessary.

FILTER CLEANING SUPPLIES


Use specially formulated filter cleaner to help restore your filter’s particle capturing capability quickly and easily.

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SHOP SPECIALTY FILTERS

clamp on air filters
industrial filters
racing box filter
crankcase vent breather

Our Story

Why K&N?

We're #1 for a reason. Since 1969 every product we've created delivers high-performance, unmatched quality and longevity

“ABSOLUTELY LOVE IT, BIKE BREATHES SO MUCH BETTER. LESS LAG ON TAKEOFF. IT'S AMAZING, AND I DEFINITELY NOTICED THE HP GAIN WHEN I GET ON THE THROTTLE. MY BIKE WENT FROM AN ANIMAL TO A MONSTER. THANKS K&N!”

— TERRENCE FROM PENNSYLVANIA, K&N AIR FILTER

FREQUENTLY ASKED QUESTIONS

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