Thrashin Supply Co. Derby Cover -70-98 Big Twin - Polished
- 6061 billet aluminum construction
- Made in U.S.A.
Fitment:
- 70-98 Big Twin
| 1970-1980 | Harley-Davidson | Electra Glide FL |
| 1971-1978 | Harley-Davidson | 1200 Super Glide FX |
| 1974-1980 | Harley-Davidson | 1200 Super Glide FXE |
| 1977-1979 | Harley-Davidson | 1200 Low Rider FXS |
| 1978-1984 | Harley-Davidson | Electra Glide FLH |
| 1979-1980 | Harley-Davidson | 1200 Fat Bob FXEF |
| 1979-1981, 1985 | Harley-Davidson | Fat Bob FXEF |
| 1979-1982 | Harley-Davidson | Low Rider FXS |
| 1979-1982, 1987-1993 | Harley-Davidson | Electra Glide Sport FLHS |
| 1979-1984 | Harley-Davidson | Super Glide 80 FXE |
| 1980-1982 | Harley-Davidson | Sturgis FXB |
| 1980-1983 | Harley-Davidson | Tour Glide FLT |
| 1980-1986 | Harley-Davidson | Wide Glide FXWG |
| 1980-1994 | Harley-Davidson | Tour Glide Classic FLTC |
| 1981 | Harley-Davidson | Electra Glide Heritage FLH |
| 1981-1982 | Harley-Davidson | Electra Glide Classic FLH |
| 1982-1983 | Harley-Davidson | Super Glide II FXR |
| 1982-1983 | Harley-Davidson | Super Glide II FXRS |
| 1983 | Harley-Davidson | Disc Glide FXDG |
| 1983-1985 | Harley-Davidson | Low Rider FXSB |
| 1983-1987 | Harley-Davidson | Electra Glide Standard FLHT |
| 1983-1993 | Harley-Davidson | Sport Glide FXRT |
| 1983-1998 | Harley-Davidson | Electra Glide Classic FLHTC |
| 1984 | Harley-Davidson | Disc Glide FXRDG |
| 1984 | Harley-Davidson | Electra Glide Special FLHX |
| 1984-1985 | Harley-Davidson | Low Glide FXRS |
| 1984-1993 | Harley-Davidson | Softail Standard FXST |
| 1985 | Harley-Davidson | Low Glide Custom FXRC |
| 1986 | Harley-Davidson | Sport Glide Grand Touring FXRD |
| 1986-1990 | Harley-Davidson | Softail Heritage FLST |
| 1986-1993 | Harley-Davidson | Low Rider FXRS |
| 1986-1994 | Harley-Davidson | Super Glide FXR |
| 1986-1998 | Harley-Davidson | Softail Custom FXSTC |
| 1987 | Harley-Davidson | Low Rider Chrome FXRC |
| 1987-1994 | Harley-Davidson | Low Rider Custom FXLR |
| 1987-1998 | Harley-Davidson | Softail Heritage Classic FLSTC |
| 1988-1993 | Harley-Davidson | Low Rider Sport FXRS-SP |
| 1988-1998 | Harley-Davidson | Softail Springer FXSTS |
| 1989-1996 | Harley-Davidson | Tour Glide Ultra Classic FLTCU |
| 1989-1998 | Harley-Davidson | Electra Glide Ultra Classic FLHTCU |
| 1990-1993 | Harley-Davidson | Low Rider Convertible FXRS-CONV |
| 1990-1998 | Harley-Davidson | Softail Fat Boy FLSTF |
| 1992 | Harley-Davidson | Dyna Glide Custom FXDC |
| 1993 | Harley-Davidson | Softail Nostalgia FLSTN |
| 1993-1998 | Harley-Davidson | Wide Glide FXDWG |
| 1993-1998 | Harley-Davidson | Low Rider FXDL |
| 1994-1996 | Harley-Davidson | Softail Heritage Special FLSTN |
| 1994-1998 | Harley-Davidson | Road King FLHR |
| 1995-1997 | Harley-Davidson | Softail Bad Boy FXSTSB |
| 1995-1998 | Harley-Davidson | Electra Glide Classic EFI FLHTCI |
| 1995-1998 | Harley-Davidson | Electra Glide Ultra Classic EFI FLHTCUI |
| 1995-1998 | Harley-Davidson | Super Glide FXD |
| 1995-1998 | Harley-Davidson | Dyna Convertible FXDS-CONV |
| 1996 | Harley-Davidson | Tour Glide Ultra Classic EFI FLTCU |
| 1996-1998 | Harley-Davidson | Road King EFI FLHR |
| 1997-1998 | Harley-Davidson | Softail Heritage Springer FLSTS |
| 1998 | Harley-Davidson | Road Glide FLTR |
| 1998 | Harley-Davidson | Road King Classic EFI FLHRC |
| 1998 | Harley-Davidson | Road Glide EFI FLTR |
