Maxima Racing Oils AFR-1003-00 ProFilter Ready to Use Dual Stage Foam Air Filter, Single Honda M/C CRF 250R/X 04-09/CRF 450R 03-08/CRF 450X 03-08 Bonded dual-stage open cell foam matrix with 6 millimeter outer foam and 10 millimeter inner foam layer Washable and re-useable, with high strength glued seams that won't fall apart Pre-oiled with Maxima FFT filter oil Complete with disposable gloves and packaged in a resealable bag