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Motorworld’s newspaper № 15
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At the automotive show in Berlin in 1933, the Zündapp Werke, GmbH factory, located in Nuremberg (Germany), presented a new motorcycle series—Series K. The letter “K” in its name was an indication that this motorcycle had a cardan drivetrain.

Zündapp K 800

The Zündapp K 800 was equipped with a 4-cylinder, flat, air-cooled engine with 20 hp at 4000 rpm, which had a very beautiful design both externally and internally. The first engine modification had the bronze-backed bearings in connecting-rod big ends and PALAS bronze carburetor; the camshaft was chain-driven. The first K 800 machine had an engine with 18 hp rating.

Zündapp K 800

In 1935, the motorcycle was modified. Lower connecting rod heads got needle roller bearings, the generator was driven by fabroil gear with a rubber damper introduced into the system, and most importantly, the new Amal carburetor was installed, the motorcycle capacity increased to 20 hp. On versions with an accelerator pump the power reached 22 hp. Also the shape of crankcase cover plates was changed, both for the upper cover and for the one closing the carburetor.

Zündapp K 800

Army version K 800-W was especially favored by soldiers, but this model had the following flaw: the spark plugs got often fouled due to the undercooling of rear cylinders. Wehrmacht had in its inventory around 550 K 800 units. The Zündapp K 800 was and still is the only four-cylinder motorcycle used by the German army.

During the period between 1933 and 1938, the Zündapp Werke, GmbH factory manufactured 7,569 K 800 motorcycles.

Manufacturer Zündapp Werke, GmbH, Nuremberg (Germany)
Years of manufacture 1933 – 1938
Quantity produced, units 7 569
Price 1 550 RМ
Today’s value 10 309,6 $
ENGINE AND TRANSMISSION
Type 4-cylinder, horizontally-opposed, air-cooled
Engine capacity, cc 804
Bore and stroke, mm 66 х 66,6
Engine rating 20 h.p. at 4000 rpm
Sparking Magneto, left-side kickstarter arrangement
Carburetor Amal or Pallas 22 mm
Battery 6 V
Clutch Single dry plate
Transmission 4-speed
FRAME AND WHEELBASE
Frame type Welded, duplex
Front suspension Parallelogram, with frictional damper
Rear suspension Rigid
Brakes Drum type
Wheel size 3,50 or 4,00 х 19
DIMENSIONS
Length, mm
2 165
Width, mm
   815
Height, mm
   900
Wheelbase, mm
1 405
Ground clearance, mm
   120
Seat height, mm
   720
Mass, kg
   215
Gas tank size, l
     15
Maximum speed, km/h
   110
Range, km
   200