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The facilities have in-the-floor-chassis dynamometers, to ensure that all K & N air filters are technically designed for the highest increase in horsepower. To keep on the cutting edge of technology, K & N has its own technical facilities that are devoted to product development and testing. K & N also dominates the world's most prestigious and technical racing association with nine of twelve Formula One Teams using K & N air filters. Today, K & N equips about 80% of all off-road racing vehicles and wins in every major off-road event in the world, including Pikes Peak, the Baja 500 & 1000 and the grueling Paris to Dakar race. K & N quickly grew to be the world's most widely used performance air filter in both the automotive and motorcycle markets.
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With the success K & N experienced in the motorcycle market, the Company decided to branch out to the automotive Motorsports market. K & N first developed air filters specifically for the motorcycle racing market. Located in Riverside California, K & N also has another manufacturing facility in the United Kingdom. K & N Engineering, Inc., "manufacturer of the world's best air filters", has been the innovative leader in air filter technology since 1963, serving the needs of the automotive, motorcycle, marine, industrial and military markets.