FOAM AIR FILTERS: NO TOIL manufactures the World's best 2-stage foam air filters. Using only the best flame-laminated dual-layer foam bonded with the highest quality glue they hand make each foam filter to stand up to the roughest and toughest of any style of riding or terrain. These filters, used with No-Toil foam filter oil, provide the best air filtration system in the world! (Remember: NO TOIL oil washes clean in water and is 100% biodegradable; dirty water can be thrown down the sink. You do not need to use harmful petrol or kerosene to clean your filter. Fits: KTM 50 MINI ADVENTURE 2002-2007 50 SX 2006-2008 50 SX JUNIOR ADVENTURE 2002-2008 50 SX PRO JUNIOR 2002-2008 50 SX PRO SENIOR 2002-2008 50 SX PRO SENIOR ADVENTURE 2007