Athena (P400485600225) Top End Gasket Kit Yamaha YFB 250 TIMBERWOLF 1992-2002; Yamaha YFM 225 MOTO 4 1985-1988; Yamaha YFM 250 MOTO 4 1989-1991; Yamaha YFM 250 XL BEAR TRACKER 1998-2002