As a rule, no jet changes are required with just a K&N filter element, however the spark plug condition should be checked for proper mixture after the first few miles of riding. If the airbox has been modified for increased air flow, the main jet size will need to be increased to provide the proper fuel mixture. Here are some interesting facts about K&N Air Filters: Designed to increase acceleration and horsepower Washable and reusable Will NOT void US warranty Emission legal in all 50 US States Replacement air filters for most street bikes, sport bikes, dirt bikes, cruisers, dual sport bikes, touring bikes, ATV's and more!
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