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K&N FILTER UNIVERSAL OF51mm x OT102/76mm x H70mm #KNRU1820

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In the early 1960s, two motorcycle racers, Ken Johnson and Norm McDonald (K&N) developed a ground-breaking new idea for an air filter. After experimenting with numerous types of filter media, they discovered that an oiled cotton design allowed the filter to not only capture contaminants very efficiently, but also allowed it to be washed and reused, and the original K&N High-Flow Air Filter was born. Five decades later, K&N is still innovating industry-leading filtration technology. In addition to performance air filters, K&N® now manufactures a variety of other protection and performance products, including air intake systems, oil filters & fuel filters, with a reputation for exceptional quality and customer service.

K&N's Universal Air Filters are designed and manufactured for a wide variety of applications including racing vehicles, radio-controlled cars, generators, snowmobiles, tractors, and other applications. Regardless of the angle or offset diameter of the air intake, there is probably a K&N Universal air filter for your equipment. All filters are constructed with ultra-strong moulded pliable rubber flanges which absorb vibration and allow for secure attachment and can also be stretched for up to 1/16 of an inch (1.5mm) to fit in-between sizes. K&N universal air filters are washable and reusable.


  • Designed to increase horsepower and acceleration

  • Hundreds of sizes and shapes for most applications

  • High airflow with excellent filtration

  • Clamp-on washable and reusable air filter

  • Malleable flanges


  • Filter Material: Cotton Gauze

  • Base Outside Length: 102mm

  • Base Outside Width: 76mm

  • Top Outside Length: 89mm

  • Top Outside Width: 64mm

  • Height: 70mm

  • Flange Inside Diameter: 51mm

  • Flange Length: 16mm

  • Flange Offset: 13mm

We'll help you with sizing and fitments, please ask. We only send Tracked/Signature required but once sent you can use the tracking number give the courier ATL "Authority to Leave". Emoto Ltd is an official agent for all brands sold and return to base 12 Month Manufacturer Warranties apply. Our address is our office location, items are sent from wholesale facilities in various places (everything is already in NZ)!