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K&N PERFORMANCE FILTERS

K&N users would probably be surprised by the amount of air filtration testing and scientific research that goes on in K&N facilities as well as in independent laboratories. As the leader and originator of the high flow performance air filter we are always looking for new ways to provide excellent protection and maximum power for your car, truck, motorcycle, and just about anything else with an engine. In 2005 more than 1600 vehicles were tested by K&N's R&D group on dynamometers in the US, United Kingdom, and the Netherlands. In addition to these power and torque tests, we also performed more than 110 filtration tests and more than 1,200 air flow tests with our in-house state-of-the-art test equipment. Select one of the links below to read or listen to more information on air filters and the science behind their design and function.
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K&N Typhoon Cold Air Intake K&N Typhoon Cold Air Intake Kit: Ford Focus ST
List Price: $538.92
Our Price: $296.99
You save $241.93!
K&N High Flow Drop-In Air Filter: Ford Fiesta ST K&N High Flow Drop-In Air Filter: Ford Fiesta ST
List Price: $70.98
Our Price: $45.99
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K&N Typhoon Cold Air Intake System: Ford Focus ST K&N Typhoon Cold Air Intake System: Ford Focus ST
List Price: $449.16
Our Price: $247.99
You save $201.17!
&N Replacement Air Filter: Ford Focus ST K&N Replacement Air Filter: Ford Focus ST
List Price: $87.85
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&N Replacement Air Filter: Ford Focus ST K&N Replacement Cone Air Filter: Ford Focus ST
List Price: $79.02
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K&N Aircharger Intake System: Ford Fiesta ST K&N 63 Series Aircharger Intake System: Ford Fiesta ST
List Price: $425.00
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K&N 4.25" High Performance Air Filter K&N 4.25" High Performance Air Filter with Carbon Fiber Top
List Price: $181.09
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KN Filter K&N Stock Replacement Air Filter: Mazdaspeed 6 & CX-7
List Price: $64.19
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KN Filter K&N Stock Replacement Air Filter: Mazdaspeed 3 & Mazda 3
List Price: $63.81
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K&N Universal High-Flow Air Filter K&N Universal High-Flow Air Filter
List Price: $64.19
Our Price: $45.90
You save $18.29!
K&N Stock Replacement Air Filter: MAZDASPEED, All Protege 1.6/2.0L K&N Stock Replacement Air Filter: MAZDASPEED, All Protege 1.6/2.0L
List Price: $48.90
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K&N Cold Air Intake: Mazda 3 K&N Cold Air Intake: Mazda 3
List Price: $427.19
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K&N 69 Series Typhoon Intake: Mazdaspeed 3 K&N 69 Series Typhoon Intake: Mazdaspeed 3 2007-2009
List Price: $449.00
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K&N 69 Series Typhoon Intake: Mazdaspeed 3 K&N 69 Series Typhoon Intake: Mazdaspeed 3 2010+
List Price: $449.00
Our Price: $321.04
You save $127.96!

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K&N 69 Series Typhoon Performance Intake Kit: 2014+ Mazda 3 2.0L L4 K&N 69 Series Typhoon Performance Intake Kit: 2014+ Mazda 3 2.0L L4
List Price: $449.16
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K&N 69 Series Typhoon Performance Intake Kit: 2014+ Mazda 3/6 2.5L L4 K&N 69 Series Typhoon Performance Intake Kit: 2014+ Mazda 3/6 2.5L L4
List Price: $499.17
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K&N 69 Series Typhoon Short Ram Intake: 07-08 Mazda 6 K&N 69 Series Typhoon Short Ram Intake: 07-08 Mazda 6
List Price: $515.58
Our Low Price: $309.71
You save $205.87!