KandN REPLACEMENT AIR FILTER Duke 125/200/390 /RC390

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K&N performance automotive filters are designed to increase horsepower and acceleration. They are washable reusable and come with a K&N Million Mile Limited Warrantyĺ¨ Will NOT Void vehicle Warranty Lasts up to 50000 miles before cleaning is required depending on driving conditions Emissions Legal in all 50 US States. Economical a K&N Air Filter Will Last the Life of Your Automobile motorcycle or ATV Works with vehicle Electronics Replaces factory stock air filter Environmentally Friendly Since 1969 K&N Engineering has been designing manufacturing and enhancing High-Flow Air Filters for the motorcycle enthusiast. K&N invented the high-Flow category and the High-Flow Technology that supports it. K&N have Hit the sweet spot ‰ŰŇ an optimal blend of high air flow, filtration, efficiency, durability and dust capacity. A K&N Air Filter is made of 4 to6 layers of cotton gauze sandwiched between two epoxy-coated aluminium wirescreens. The cotton is treated with a specially formulated grade of oil causing tackiness throughout the cotton‰ŰŞs microscopic strands. The nature of the cotton allows high volumes of airflow and when combined with the Tackiness of the oil creates a powerful filtering media that ensures engine protection!

For over 40 years K&N has been designing and manufacturing performance air filters for the motorcycle and ATV enthusiast interested in maximizing horsepower and acceleration. Our air filter is designed to achieve high virtually unrestricted air flow while maintaining filtration levels critical to ensure long engine life. K&N Air Filters will NOT void Motorcycle Warranty and are environmentally friendly. K&N Reusable Air Filters reduce the volume of disposable air filters that end up in landfills!

  • Designed to provide increased Horsepower and Acceleration
  • Pleated cotton media provides a large filtration area offering low restriction and long service intervals
  • Multi-Layers of woven cotton gauze media offers excellent filtration
  • Fits directly into OEM Airbox with application specific Sealing Bead ensuring a precise fit
  • No fuel Management modifications are normally required to obtain increased performance
  • Washable & reusable most are pre-oiled and ready to ride!