- Superior construction for serious power
- Versatile plugs with wide operating heat ranges prevent fouling from running too cool and preignition from running too hot
- Features high alumina ceramics for improved heat dissipation and electrical insulation, deep-seated copper core for a wider heat range and a nickel alloy tip for longer life
Honda -- NC 50 Express -- (1983, 1982, 1977, 1979, 1980, 1978, 1981); Honda -- QR50 -- (1987, 1993, 1995, 1997, 1986, 1992, 1983, 1994, 1996, 1984, 1989, 1991, 1985, 1988, 1990); Kawasaki -- KFX 50 -- (2004, 2006, 2003, 2005); Kawasaki -- KDX 50 -- (2004, 2003, 2006, 2005); Suzuki -- FZ 50 Rascal -- (1982, 1979, 1981, 1983, 1980); Suzuki -- JR 50 -- (2000, 2005, 2001, 2004, 2003, 2002, 2006); Suzuki -- LT 50 Quadrunner -- (2005, 2009, 1998, 2000, 2004, 2008, 1988, 1992, 1997, 1999, 1993, 2002, 2003, 2007, 1986, 1987, 1989, 2001, 1985, 1991, 1996, 1983, 1984, 1990, 1994, 1995, 2006); Suzuki -- FA 50 Shuttle -- (1985, 1990, 1991, 1988, 1981, 1982, 1989, 1980, 1986, 1984, 1983, 1987); Yamaha -- PW 50 -- (1988)