Description
Features
- All the features of the famous Dyna "S", plus the special feature of firing the front and rear cylinders independent of each other, allowing a much more accurate timing of each cylinder
- The stock ignition system fires both cylinders at the same time, which works fine for the front cylinder but the rear receives the "wasted" spark when the cylinder has started its intake stroke; this can result in harder starting, increased engine vibration, backfire and raw fuel being spit back into the carb, all creating a power loss
- Dyno and top-speed testing have shown a dramatic improvement in power in all areas; bikes with hotter cams show the greatest improvement
- If you truly want to get the most out of your stock, slightly modified or all-out customized Harley-Davidson, you need a Dyna "S" single-fire ignition system
- Made in the U.S.A.
| Position | Notes | |||
|---|---|---|---|---|
| 1988-1999 | Harley-Davidson | FXSTS Springer Softail | - | - |
| 1984, 1985, 1986, 1987, 1988, 1991, 1992 | Harley-Davidson | FXRS Low Glide | - | - |
| 1989-1997 | Harley-Davidson | FLHTCU Electra Glide Ultra Classic | - | - |
| 1981-1993 | Harley-Davidson | FLTC Tour Glide Classic | - | - |
| 1982, 1983, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994 | Harley-Davidson | FXR Super Glide II | - | - |
| 1983-1992 | Harley-Davidson | FXRT Sport Glide | - | - |
| 1986-1999 | Harley-Davidson | FXSTC Softail Custom | - | - |
| 1988-1993 | Harley-Davidson | FXRS-SP Low Rider Sport | - | - |
| 1985, 1987 | Harley-Davidson | FXRC Low Rider Chrome | - | - |
| 1993-1998 | Harley-Davidson | FXDL Dyna Low Rider | - | - |
| 1989-1995 | Harley-Davidson | FLTCU Tour Glide Ultra Classic | - | - |
| 1996 | Harley-Davidson | Tour Glide Ultra Classic FLTCU | - | - |
| 1987-1994 | Harley-Davidson | FXLR Low Rider Custom | - | - |
| 1993-1998 | Harley-Davidson | FXDWG Dyna Wide Glide | - | - |
| 1983 | Harley-Davidson | FXDG Disc Glide | - | - |
| 1994-1998 | Harley-Davidson | FLHR Road King | - | - |
| 1979-1985 | Harley-Davidson | XLS Roadster | - | - |
| 1978-1980 | Harley-Davidson | 1200 Electra Glide FLH | - | - |
| 1990-1999 | Harley-Davidson | FLSTF Fat Boy | - | - |
| 1988-1999 | Harley-Davidson | FLSTC Heritage Softail Classic | - | - |
| 1994-1996 | Harley-Davidson | FLSTN Heritage Softail Special | - | - |
| 1986, 1988 | Harley-Davidson | XLH883 | - | - |
| 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 | Harley-Davidson | Sportster 883 XLH | - | - |
| 1996-1997 | Harley-Davidson | XL1200C Sportster 1200 Custom | - | - |
| 1986-1995 | Harley-Davidson | XLH883DLX Sportster 883 Deluxe | - | - |
| 1987-1997 | Harley-Davidson | XLH883HUG Sportster 883 Hugger | - | - |
| 1977, 1978, 1980, 1981, 1982 | Harley-Davidson | FXS Low Rider | - | - |
| 1980-1984 | Harley-Davidson | FXWG Wide Glide | - | - |
| 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1980, 1981, 1982, 1983, 1984 | Harley-Davidson | FLH Electra Glide | - | - |
| 1979 | Harley-Davidson | Electra Glide FLH | - | - |
| 1974, 1975, 1976, 1977, 1978, 1981, 1982, 1983, 1984 | Harley-Davidson | FXE Super Glide | - | - |
| 1972-1985 | Harley-Davidson | XLH1000 | - | - |
| 1999 | Harley-Davidson | FXSTB Night Train | - | - |
| 1980-1983 | Harley-Davidson | FLT Tour Glide | - | - |
| 1984-1993 | Harley-Davidson | FXST Softail Standard | - | - |
| 1990-1993 | Harley-Davidson | FXRS-Conv Low Rider Sport Convertible | - | - |
| 1983-1998 | Harley-Davidson | FLHTC Electra Glide Classic | - | - |
| 1980, 1981, 1982, 1987, 1988, 1989, 1990, 1991, 1992, 1993 | Harley-Davidson | FLHS Electra Glide Sport | - | - |
| 1989, 1990, 1993 | Harley-Davidson | Low Rider FXRS | - | - |
| 1984 | Harley-Davidson | FXRDG Disc Glide | - | - |
| 1993 | Harley-Davidson | Sport Glide FXRT | - | - |
| 1995-1998 | Harley-Davidson | FXDS-Conv Dyna Convertible | - | - |
| 1988-1997 | Harley-Davidson | XLH1200 | - | - |
| 1983-1985 | Harley-Davidson | FXSB Low Rider - Belt | - | - |
| 1971-1978 | Harley-Davidson | FX Super Glide | - | - |
| 1981 | Harley-Davidson | Electra Glide Heritage FLH | - | - |
| 1979-1980 | Harley-Davidson | Fat Bob FXEF | - | - |
| 1979-1980 | Harley-Davidson | 1200 Super Glide FXE | - | - |
| 1980-1982 | Harley-Davidson | FXB Sturgis | - | - |
| 1971-1979 | Harley-Davidson | XLCH | - | - |
| 1995-1998 | Harley-Davidson | FXD Dyna Super Glide | - | - |
| 1995-1997 | Harley-Davidson | FXSTSB Bad Boy | - | - |
| 1970-1980 | Harley-Davidson | Electra Glide FL | - | - |
| 1997-1999 | Harley-Davidson | FLSTS Heritage Springer | - | - |
| 1979-1980 | Harley-Davidson | 1200 Fat Bob FXEF | - | - |
| 1983, 1985 | Harley-Davidson | Electra Glide Standard FLHT | - | - |
| 1982-1983 | Harley-Davidson | Super Glide II FXRS | - | - |
| 1984 | Harley-Davidson | FLHX Electra Glide Special | - | - |
| 1998 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU | - | - |
| 1977-1978 | Harley-Davidson | XLCR Cafe Racer | - | - |
| 1981-1982 | Harley-Davidson | Electra Glide Classic FLH | - | - |
| 1977-1978 | Harley-Davidson | XLT | - | - |
| 1986-1990 | Harley-Davidson | FLST Heritage Softail | - | - |
| 1993 | Harley-Davidson | FLSTN Heritage Softail Nostalgia | - | - |
| 1983-1985 | Harley-Davidson | XLX 1000 | - | - |
| 1979 | Harley-Davidson | 1200 Low Rider FXS | - | - |
| 1980, 1994 | Harley-Davidson | Tour Glide Classic FLTC | - | - |
| 1998 | Harley-Davidson | FLTR Road Glide | - | - |
| 1987 | Harley-Davidson | Softail Heritage Classic FLSTC | - | - |
| 1986-1987 | Harley-Davidson | XLH1100 | - | - |
| 1979-1980 | Harley-Davidson | Super Glide 80 FXE | - | - |
| 1986 | Harley-Davidson | FXRD Sport Glide Grand Touring | - | - |
| 1992 | Harley-Davidson | FXDC Super Glide Custom | - | - |
| 1979 | Harley-Davidson | Low Rider FXS | - | - |
| 1981, 1985 | Harley-Davidson | FXEF Fat Bob | - | - |
| 1971 | Harley-Davidson | XLH900 | - | - |
| 1986-1987 | Harley-Davidson | FLHT Electra Glide Standard | - | - |