| Year | 1929 |
| Bore x Stroke | 78 x 78 mm |
| Capacity | 745 cc / 45.5 cu in. |
| Clutch | Single plate dry clutch |
| Compression Ratio | 5.5:1 |
| Cooling System | Air cooled |
| Engine | Four stroke, two cylinder flat twin, Side valve |
| Final Drive | Shaft |
| Frame | Twin loop pressed steel frame |
| Front Brake | ∅200mm Drum |
| Front Suspension | Plate spring 9 laminae |
| Fuel Capacity | 14 L / 3.7 US gal |
| Gear Ratio | 1st 2.83 / 2nd 1.55 / 3rd 1.08:1 |
| Generator | Bosch Magneto generator D2L or Magneto Ignition FF2 |
| Ignition | Magneto |
| Induction | Single carburetor type BMW ∅24 mm (1933: 1 x carburetor type Amal 6/406 SP and 6/407 SP) |
| Max Power | 13.4 kW / 18hp @ 3400 rpm ( 1933: 14.9 kW / 20hp @ 4400 rpm) |
| Rear Brakes | ∅37mm Cardan brake |
| Rear Suspension | Rigid, spring loaded saddle |
| Starting | Kick |
| Transmission | 3 Speed |
| Wet-Weight | 182 kg / 401 lbs |
