German Motorcycles

DIAG Motorcycles

A Brief History of the Marque

Manufactured from 1921-1928

Diag GmbH, Motorrad- und Apparatebau, Leipzig

 DIAG from Leipzig initially produced bicycle auxiliary engines up to 100 cc. Later they commenced motorcycle production with machines in the classes 175cc to 350 cc, with some models having the engine suspended in the chassis.

SourcesGTU Oldtimerservice

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Allen Motorcycle Museum
Allen Motorcycle Museum
Private museum in Boston, MA, with many highly collectable vintage motorcycles for sale.