Clutch Spacer Ring between the Clutch Housing and Pressure Plate.
| BMW Part Number | 21 21 1 451 274 |
| Model | Year |
| K1 (89V1) | 08/88-09/93 ECE |
| K1 (89V1) | 01/89-11/92 USA |
| K100 (K589) | 05/82-12/88 ECE |
| K100 (K589) | 03/84-10/86 USA |
| K100 (K589) | 10/87-07/90 ECE |
| K100LT (K589) | 07/86-10/91 ECE |
| K100LT (K589) | 07/86-03/91 USA |
| K100RS (89V1) | 03/89-06/92 ECE |
| K100RS (89V1) | 07/90-01/92 USA |
| K100RS (K589) | 05/83-10/89 ECE |
| K100RS (K589) | 03/84-07/89 USA |
| K100RT (K589) | 10/83-07/89 ECE |
| K100RT (K589) | 04/84-05/88 USA |
| K1100LT (89V2) | 06/89-04/99 ECE |
| K1100LT (89V2) | 02/92-03/97 USA |
| K1100RS (89V2) | 04/92-12/96 ECE |
| K1100RS (89V2) | 11/92-06/96 USA |
| K1200GT (K41) | 03/02-07/05 ECE |
| K1200GT 03-04 (K41) | 04/02-10/04 USA |
| K1200LT (89V3) | 02/03-07/08 ECE |
| K1200LT (89V3) | 06/97-12/03 ECE |
| K1200LT 05-09 (89V3) | 02/03-07/08 USA |
| K1200LT 99-04 (89V3) | 06/97-11/03 USA |
| K1200RS (89V3) | 04/96-04/05 ECE |
| K1200RS (K41) | 03/00-07/05 ECE |
| K1200RS 02-04 (K41) | 03/00-07/04 USA |
| K1200RS 98-01 (89V3) | 05/96-12/00 USA |