| Introduced in 1978, updated in the 1981 Catalog. |
| Components | View Search List |
| Category | Photo | Name | Years | Added |
| Cranksets |  | Shimano FC-SL24, Selecta B1 | 1979 - Early 1980's | 10/31/07 |
| Front Derailleurs |  | Shimano FD-AT11, Altus-ST | 1979 - Early 1980's | 11/01/07 |
| Front Derailleurs |  | Shimano FD-AT12, Altus LT | 1978 - Early 1980's | 11/01/07 |
| Rear Derailleurs |  | Shimano RD-AT11, ALTUS-ST | Late 1970's - Early 1980's | 09/25/10 |
| Rear Derailleurs |  | Shimano RD-AT12, ALTUS LT | Late 1970's - Early 1980's | 03/25/10 |
| Shifters |  | Shimano SL-AT22, ALTUS-LT | Late 1970's - Early 1980's | 03/25/10 |
