Standard Piston Rings for 900cc - the three ring set is for one piston only (normally need two sets).
See PistonRing854 for the first oversize (+0.5mm). Vehicle Manufacturer: BMW Application: BMW Airhead Models
Make/Model: BMW R90/6, R90S
Model Years: 1973 - 1976
Manufacturer #: 11 25 1 259 853
(See APPLICATION TABLE tab BELOW to verify vehicle fitment)
 |  |  |
| EME Part Number: | PistonRing853 |
| BMW Part Number: | 11 25 1 259 853 |
| Model | Year |
| R90/6 (2476) | 09/73-06/76 ECE |
| R90/6 (2476) | 01/74-06/76 USA |
| R90S (2476) | 09/73-06/76 ECE |
| R90S (2476) | 01/74-06/76 USA |