Original Dual-Stage Air Filter completely submerged in Filter Oil. The filter is then massaged to ensure all pores are evenly coated with oil, it is then placed in a temperature-controlled room to allow the oil to completely cure. All you have to do is open the bag and install. AIRFILTER PRE-OILED KAWASAKI KX80 91-00 KX85 01-25 KX100 95-21 KX112 22-25