REPLACEMENT AIR FILTERS FOR THE NO-TOIL SUPER-FLO KIT Do you want to modify your air filter cage and remove the backfire screen to maximise airflow You need a No Toil flame-resistant air filter! The foam is specially treated to resist flames and sparks will not hold a flame AND more importantly you get more horsepower! Note: The Super-Flo Flame Resistant filters can be used with an original cage but care must be taken to ensure that all traces of the original gauze have been removed to avoid ingestion into the combustion chamber). Fits: Honda CRF250R 2004 2008-2009 CRF250X 2004-2007 2009-2018 CRF450R 2003-2006 2008 CRF450X 2005-2017