Manufactured by
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
Kit is for .050 over bore size – 41.25mm
Piston is 41.21mm
Compression ratio of 6.0:1
Compatible with Yamaha models below:
1981 PW50
1982 PW50
1983 PW50
1984 PW50
1985 PW50
1986 PW50
1987 PW50
1988 PW50
1989 PW50
1990 PW50
1991 PW50
1992 PW50
1993 PW50
1994 PW50
1995 PW50
1996 PW50
1997 PW50
1998 PW50
1999 PW50
2000 PW50
2001 PW50
2002 PW50
2003 PW50
2004 PW50
2005 PW50
2006 PW50
2007 PW50
2008 PW50
2009 PW50
2012 PW50
2013 PW50
2014 PW50
2015 PW50
2016 PW50