Manufactured by Namura Kit includes piston, rings, pin, clips you get exactly what is pictured Cast piston has super-high silicone content for additional strength Piston skirts are Molybdenium Teflon coated to minimize resistance/wear and provide extended life Piston dome is anodized for superior heat resistance and longer lifespan Piston does not have machine smoothed dome Kit is for .020 over bore size 47.50mm Piston is 47.46mm 9.6 1 STD compression ratio Made in Taiwan Fits 1985 Yamaha Badger 80 YFM80 1986 Yamaha Badger 80 YFM80 1987 Yamaha Badger 80 YFM80 1988 Yamaha Badger 80 YFM80 1992 Yamaha Badger 80 YFM80 1993 Yamaha Badger 80 YFM80 1994 Yamaha Badger 80 YFM80 1995 Yamaha Badger 80 YFM80 1996 Yamaha Badger 80 YFM80 1997 Yamaha Badger 80 YFM80 1998 Yamaha Badger 80 YFM80 1999 Yamaha Badger 80 YFM80 2000 Yamaha Badger 80 YFM80 2001 Yamaha Badger 80 YFM80 2002 Yamaha Raptor 80 YFM80W 2003 Yamaha Raptor 80 YFM80W 2004 Yamaha Raptor 80 YFM80W 2005 Yamaha Grizzly 80 YFM80G 2005 Yamaha Raptor 80 YFM80R 2006 Yamaha Grizzly 80 YFM80G 2006 Yamaha Raptor 80 YFM80R 2007 Yamaha Grizzly 80 YFM80G 2007 Yamaha Raptor 80 YFM80R 2008 Yamaha Grizzly 80 YFM80G 2008 Yamaha Raptor 80 YFM80R