GBGear991 Input Shaft Gear 17.5°, D=30mm - not available from BMW.
Originally, this part had a 15° gear cut. This was changed in 4/1982 to 17,5°. If your bike was manufactured after 4/1982, but before 3/1985 then this part is a direct replacement, however if your bike was manufactured before 4/1982 and never upgraded to the newer design, then you will also need to purchase a new 5th gear wheel that is also cut at 17,5°. Vehicle Manufacturer: BMW Application: BMW Airhead Models with 5 speed gearbox. Make/Model: BMW R45, R60, R80, R100 Model Years: 04/1982 - 03/1985 Manufacturer #: 23 22 1 242 991 (See APPLICATION TABLE tab below to verify vehicle fitment )
Originally, this part had a 15° gear cut. This was changed in 4/1982 to 17,5°. If your bike was manufactured after 4/1982, but before 3/1985 then this part is a direct replacement, however if your bike was manufactured before 4/1982 and never upgraded to the newer design, then you will also need to purchase a new 5th gear wheel that is also cut at 17,5°. Vehicle Manufacturer: BMW Application: BMW Airhead Models with 5 speed gearbox. Make/Model: BMW R45, R60, R80, R100 Model Years: 04/1982 - 03/1985 Manufacturer #: 23 22 1 242 991 (See APPLICATION TABLE tab below to verify vehicle fitment )
Note: The installation should be carried out by a skilled technician!
 |  |  |
| EME Part Number: | GBGear991 |
| BMW Part Number: | 23 22 1 242 991 |
| Model | Year |
| R45 (248) | 04/82-03/85 ECE |
| R45/N (248) | 04/82-03/85 ECE |
| R45T (248) | 04/82-03/85 ECE |
| R45T/N (248) | 04/82-03/85 ECE |
| R65 (248) | 04/82-03/85 ECE |
| R65 (248) | 04/82-03/85 USA |
| R65LS (248) | 04/82-03/85 ECE |
| R65LS (248) | 04/82-02/85 USA |
| R65T (248) | 04/82-03/85 ECE |
| R80 (2472) | 03/84-03/85 ECE |
| R80 (2477) | 04/82-03/85 ECE |
| R80 85-87 (2472) | 07/84-03/85 USA |
| R80G/S (2471) | 04/82-03/85 USA |
| R80GS (2471) | 04/82-03/85 ECE |
| R80RT (2472) | 07/84-03/85 ECE |
| R80RT (2477) | 06/82-03/85 ECE |
| R80RT (2477) | 08/82-03/85 USA |
| R80RT 85-87 (2472) | 07/84-03/85 USA |
| R80ST (2471) | 04/82-10/84 ECE |
| R80ST (2471) | 10/82-10/84 USA |
| R80TIC (2477) | 04/82-01/85 ECE |
| R100/7T (2474) | 04/82-10/84 ECE |
| R100/T (2474) | 04/82-09/84 USA |
| R100CS (2474) | 04/82-10/84 ECE |
| R100CS (2474) | 04/82-09/84 USA |
| R100RS (2474) | 04/82-11/84 ECE |
| R100RS 77-84 (2474) | 04/82-10/84 USA |
| R100RT (2474) | 04/82-10/84 ECE |
| R100RT 79-84 (2474) | 04/82-09/84 USA |
| R100TIC (2474) | 04/82-09/84 ECE |