- Centers the rocker plate eliminating different wear patterns on the rocker arm valve
- Tapered design so that they lock themselves in and wedge the bolt shaft in place
- Eliminates the gap between the rocker arm shaft and bolt
- Will not cure a bad lifter, tensioner, or noisy cam
- Stops the Harley rocker arm tick
Harley-Davidson -- 883 Hugger XLH -- (1998, 1990, 1996, 1993, 1987, 1999, 2001, 1989, 1992, 1994, 1997, 2003, 1988, 1991, 1995, 2000, 2002); Harley-Davidson -- 1200 Custom XLC -- (1998, 2000, 2001, 2004, 2003, 2002, 1999, 2005, 1996, 2006, 1997); Harley-Davidson -- 883 Custom XLC -- (2006, 2001, 1998, 1999, 2002, 2000, 2005, 2003, 2004); Harley-Davidson -- Sportster 883 XLH -- (1993, 1990, 1992, 1997, 2002, 1998, 1987, 1999, 2001, 1989, 2000, 2003, 1988, 1996, 1991, 1986, 1994, 1995); Harley-Davidson -- 883 Custom EFI XLC -- (2001, 2002, 2003, 1999, 2006, 2000, 2004, 2005); Harley-Davidson -- Sportster 1100 XLH -- (1986, 1987, 1988); Harley-Davidson -- 883 Deluxe XLH -- (1991, 1992, 1989, 1986, 1993, 1988, 1987, 1995, 1990, 1994); Harley-Davidson -- 883 Roadster XLR -- (2006, 2002, 2003, 2005); Harley-Davidson -- 1200 Roadster XLR -- (2006, 2004, 2005); Harley-Davidson -- 883 Low XLL -- (2006, 2005); Harley-Davidson -- Sportster 1200 XLH -- (2001, 1988, 1999, 2000, 1992, 1997, 1994, 1995, 1998, 2003, 1993, 1996, 1989, 1990, 1991, 2002); Harley-Davidson -- 1200 Sport XLS -- (1998, 1999, 2002, 1997, 1996, 2001, 2000, 2003); Harley-Davidson -- 1200 XLCP -- (2002, 2003); Harley-Davidson -- 1200 Custom EFI XLC -- (2003, 2004, 2006, 2005, 2002); Harley-Davidson -- 883 XL -- (2006, 2005, 2004); Harley-Davidson -- 1200 Roadster EFI XLR -- (2006); Harley-Davidson -- 883 Roadster EFI XLR -- (2002, 2003, 2005, 2006); Harley-Davidson -- 1200 Low EFI XLL -- (2006); Harley-Davidson -- 1200 Low XLL -- (2006); Harley-Davidson -- 883 Low EFI XLL -- (2006)