PERFORMANCE FILTRATION
INNOVATION
PERFORMANCE FILTRATION
INNOVATION
ABOUT K&N
OUR HISTORY
K&N HIGHLIGHTS
2019K&N releases a premium washable home air filter line
2021K&N introduces Filtration for the Future and gives their iconic logo a facelift.
1952Ken Johnson and Norm McDonald are both avid dirt-track racers in Southern California, and meet for the first time
1957Ken Johnson and Norm McDonald decide to go into business together, and open a motorcycle shop in Loma Linda, California
1969Ken & Norm start developing a brand-new filter design—which would later become the iconic K&N High-Flow Air Filter™. K&N as a filter company is officially born. (Pictured: K&N’s first manufacturing building in Riverside, CA)
1970K&N’s very first race support trailer
1972Ken Johnson and Jerry Mall at the SEMA show
1974“King” Kenny Roberts on his iconic K&N-equipped Yamaha race bike
1977Early years of manufacturing with K&N’s first employee, Mary Lou
1988K&N introduces the first Wrench-Off oil filter
1992K&N releases its first cold air intake system
2005Carl Judice reaches 1,000,000 miles in his 1998 Chevy with one K&N air filter
2014K&N releases its first washable cabin air filter
2016K&N becomes the Official Filter of NHRA
2017The K&N built and operated Mustang race car wins the American Iron Championship
2019K&N celebrates 50 years in business, thanks to loyal customers like you!
- 2019
K&N releases a premium washable home air filter line
- 2021
K&N introduces Filtration for the Future and gives their iconic logo a facelift.
- 1952
Ken Johnson and Norm McDonald are both avid dirt-track racers in Southern California, and meet for the first time
- 1957
Ken Johnson and Norm McDonald decide to go into business together, and open a motorcycle shop in Loma Linda, California
WHAT MAKES K&N THE BEST IN THE AFTERMARKET?
HORSEPOWER TESTING
Horsepower and torque claims are based on testing of an actual vehicle on a dynamometer before and after a K&N product has been installed. Horsepower/torque testing is performed on Dyno Jet 248 and SuperFlow 880E dynamometers, which measure actual brake horsepower and torque at the wheel(s) receiving power from the drive train. For most intake systems, dynamometer charts are available on the individual product pages under “Resources”.
AIRFLOW TESTING
K&N performs all airflow testing on a SuperFlow Corporation SF-1020 flow bench. The SF-1020 is a computerized flow bench capable of measuring airflow rates up to 1020 cubic feet per minute (cfm) at test pressures of up to 65 inches of water. To read the details of air filter testing protocol, please visit the airflow testing protocol page.
PRODUCTS AND FACILITIES
In addition to performance air filters, K&N® manufactures a variety of other protection and performance products, including air intake systems, oil filters, fuel filters, cabin air filters, and home air filters. Over the course of five decades, we’ve built a reputation for exceptional quality and customer service that millions of customers trust.
K&N products are designed and manufactured on-site. K&N® is headquartered in Riverside, California, in a building complex spanning nearly 400,000 square feet, and also operates facilities in Grand Prairie, TX, England, China, and the Netherlands. K&N facilities include departments for engineering, product design, manufacturing, warehousing, test facilities, purchasing, sales, customer service, marketing, and corporate offices.
K&N WAREHOUSE
DYNAMOMETER TESTING
VIBRATION TESTING LAB
RACING AND PARTNERS
STILL HAVE QUESTIONS?
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