

1 Cylinder » R25, R26, R27 (50 - 66):
R 25 (0T11) (08/1950 - 08/1951)
R 25/2 (0T12) (08-1951 - 03/1954).
Boxer » R 50, R51, R60, R67, R68, R69 (50 - 69):
R51/2
R67
R67/2/3
R68.
1 Cylinder » R25, R26, R27 (50 - 66):
R 25 (0T11) (08/1950 - 08/1951)
R 25/2 (0T12) (08-1951 - 03/1954).
Boxer » R 50, R51, R60, R67, R68, R69 (50 - 69):
R51/2
R67
R67/2/3
R68.