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 and 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: Suzuki DR250 1982-1987 1990-1995 DR250 Djebel XC 1997-2003 DR350 1990-1999 DR350SE 1997-1999