Manufactured by Namura Kit includes piston, rings, pin, clips, wrist pin bearing top end gasket kit 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 does not have machine smoothed dome Namura gaskets use performance materials to increase durability and provide greater reliability Includes all gaskets pictured to rebuild top end Kit is for .040 over bore size 42.00mm Piston is 41.96mm Made in Taiwan Fits 1978 Suzuki JR50 1979 Suzuki JR50 1980 Suzuki JR50 1981 Suzuki JR50 1982 Suzuki JR50 1983 Suzuki JR50 1984 Suzuki JR50 1985 Suzuki JR50 1986 Suzuki JR50 1987 Suzuki JR50 1988 Suzuki JR50 1989 Suzuki JR50 1990 Suzuki JR50 1991 Suzuki JR50 1992 Suzuki JR50 1993 Suzuki JR50 1994 Suzuki JR50 1995 Suzuki JR50 1996 Suzuki JR50 1997 Suzuki JR50 1998 Suzuki JR50 1999 Suzuki JR50 2000 Suzuki JR50 2001 Suzuki JR50 2002 Suzuki JR50 2003 Suzuki JR50 2004 Suzuki JR50 2005 Suzuki JR50 2006 Suzuki JR50