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 & toughest riding or terrain. NO TOIL filters can be used with NO TOIL biodegradable clean in water cleaner providing the best air filtration system in the world. Fits: Kawasaki KL250 STOCKMAN 2000-2021 KL250 SUPER SHERPA 1997-2009