S&S Cycle Standard Bore Engine Case Harley Davidson Disc Glide 1984 / Dyna 1991 / Electra Glide/Softail/Sport Glide/Super Glide/Tour Glide 1984 1991 / Heritage Softail 1986 1991 / Low Rider 1984 1993 / Wide Glide 1985 1986 31 0000