87-89 KAWASAKI KX250: No Toil Premium Dual Stage Air Filter Performance from the bottle to the throttle&#33; The No Toil Premium Dual Stage Air Filter is great for all motorcycle riding conditions with quality to provide riders with protection for worry-free riding.The world&#39;s best two-stage foam air filter&#3 size to ensure the best fit on your motorcycle.This filter, used with No-Toil foam filter oil, provides the best air filtration system in the world&#33;No Toil includes a 1-year warranty on the Premium Dual Stage Air Filter.