- Requires performance valve springs
- Performance lifters recommended but not required
- Will work with factory pushrods on engines with factory stack up
- If deck height, cylinders or rocker boxes have been modified from stock then adjustable pushrods are required
- Cylinder head work and performance exhaust recommended but not required
- Increased compression is required for bottom end performance
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 1984 | Harley-Davidson | Disc Glide FXRDG | |
| 1995-1999 | Harley-Davidson | Dyna Super Glide FXD | |
| 1984 | Harley-Davidson | Electra Glide Classic FLHTC | |
| 1986-1987 | Harley-Davidson | Electra Glide FLHT | |
| 1995-1998 | Harley-Davidson | Electra Glide FLHT | |
| 1986-1990 | Harley-Davidson | Heritage Softail FLST | |
| 1984 | Harley-Davidson | Low Glide FXRS | |
| 1994-1998 | Harley-Davidson | Road King FLHR | |
| 1984-1990 | Harley-Davidson | Softail FXST | |
| 1999 | Harley-Davidson | Softail Standard FXST | |
| 1984 | Harley-Davidson | Sport Glide FXRT | |
| 1986-1994 | Harley-Davidson | Super Glide FXR | |
| 1984 | Harley-Davidson | Tour Glide Classic FLTC | |