Manufactured by Namura Kit Includes 4 Compression Rings, enough for both pistons you get exactly what is pictured Rings are interchangeable with OEM pistons unless noted Rings are for standard bore size 64.00mm Made in Taiwan Fits 1987 Yamaha Banshee 350 YFZ350 1988 Yamaha Banshee 350 YFZ350 1989 Yamaha Banshee 350 YFZ350 1990 Yamaha Banshee 350 YFZ350 1991 Yamaha Banshee 350 YFZ350 1992 Yamaha Banshee 350 YFZ350 1993 Yamaha Banshee 350 YFZ350 1994 Yamaha Banshee 350 YFZ350 1995 Yamaha Banshee 350 YFZ350 1996 Yamaha Banshee 350 YFZ350 1997 Yamaha Banshee 350 YFZ350 1998 Yamaha Banshee 350 YFZ350 1999 Yamaha Banshee 350 YFZ350 2000 Yamaha Banshee 350 YFZ350 2001 Yamaha Banshee 350 YFZ350 2002 Yamaha Banshee 350 YFZ350 2003 Yamaha Banshee 350 YFZ350 2004 Yamaha Banshee 350 YFZ350 2005 Yamaha Banshee 350 YFZ350 2006 Yamaha Banshee 350 YFZ350