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 IFA (MZ) - 350 BK
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Photo ou archives : F-M. Dumas

Capacity : 350
Model : BK
Production : 1952 - 1955
Category : (R) Street Bike


BK 350 - 1952

An East German promise

After World War II, the German DKW factory, universal leader in the building of two-stroke engines, found itself on the wrong side of the Iron Curtain in East Germany, and was renamed first IFA, then MZ ("Motorradwerke Zschopau").

Leading-Link Forks

The 1952 BK 350 was one of the first models to bear the new MZ badge, and it remained in production until 1959, with an important modification in 1956, when Earles leading-link front forks were fitted. The BK 350 was an example of that great rarity, the flat-twin two-stroke. Its highly advanced construction made use of such techniques as shaft final drive, but its commercial success was restricted by the depressed state of the market.

Sporting Success

In 1956, it was shouldered aside – and ultimately replaced – by simpler, more economical single-cylinder two-strokes. As a prelude to its great sporting success in speed and off-road events, and in its first years of existence, the MZ factory at Zschopau utilized the BZ 350 for its first entries in the ISDT – International Six Days' Trial – where in 1956 Horst Liebe won a gold medal riding a BZ 350. Apart from its cross-country equipment, this bike was no different from the standard machine.


Engine: 343cc (58x65 mm) flat-twin two-stroke

Power Rating: 17 hp @ 5000 rpm

Valves: two-stroke

Fuel System: single carburetor

Transmission: 1 speed shaft drive

Suspension: (front) telescopic fork; (rear) vertical plunger

Brakes: drum

Wheels: wire, 3.25x19 in

Weight: 340 lb

Maximum Speed: 72 mph

Though it was identified as an IFA-MZ, the BK350 should be regarded as the last of the classic DKW two-strokes.

Le fichier Moto Passion réalisé par François-Marie Dumas réunit près de deux mille photos accompagnées d'un historique très complet des machines présentées.
Il sera progressivement mis à jour ici et toute information complémentaire est la bienvenue sur info@moto-collection.org.

Cette documentation unique, qui constitue sans doute l'encyclopédie la plus exhaustive jamais écrite sur l'histoire de la moto, a été réalisée avec l'assistance de nombreux spécialistes dont principalement Didier Ganneau, Christophe Gaime, Mick Woollett, Jean Goyard, Bernard Salvat, Christian Rey, Yves Campion, Helmut Krackowizer, Michael Dregni, Michel Montange, etc. que je remercie ici.

Disponible sur demande :
- Les fiches originales sur papier
- Les photos et archives signées de mon nom en haute définition ou les documents originaux.
Me contacter sur info@moto-collection.org pour les conditions et droits d'utilisation.