No-Toil Dual Stage Foam Air Filters No-Toil manufactures the worlds best 2-stage foam air filters. Using only the best flame-laminated dual-layer foam bonded with the highest quality glue. No-Toil hand makes 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! Dual Stage Foam: Two different pore sizes create more trapping area for even the smallest dust particles Flame Laminated Foam: Both “stages” are not glued, but heat sealed to provide maximum air flow Reticulated Foam: increases dirt stopping surface area and increases foam strength Strong glue seams will withstand harsh solvents and gas. Light color foam makes it easier to see where the filter oil has not been applied OEM size for more dirt stopping capability Handmade Every filter is inspected for quality One year warranty Made in U.S.A.