Hako and HKR are historic German motorcycle brands of the same manufacturer.
The company name was: Hans Korn Motorradbau, Rothenburg ob der Tauber.
In the first half of the twenties hundreds of small German companies jumped into the need for cheap motorcycles created after the First World War. Most of them bought cheap German built-in motors that fitted them in their own frames. Due to the big competition, in the year 1925, more than 150 of these brands went aside.
Hans Korn threw it over another bow. British driver Howard R. Davies had made name in the main race in the world, the Isle of Man TT and started his own brand HRD. To that end he used JAP motors. In 1924, Korn started building imitations of the HRD, allowing for 348 and 498cc-JAP headlamps. He thus assumed a small part of the market: sporty but expensive motorcycles. He survived the year 1925, but had to reorganize his company, after which the motorcycles were delivered under the new brand name "HKR" (Hans Korn Rothenburg) in 1926. However, this was the last year of production.
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