HJ was a motorcycle produced by Howard and Johnson of Birmingham.
This machine was a sole model lightweight with a 269cc two-stroke Liberty engine and a Roc two-speed gearbox with chain-cum-belt transmission. There was also the option of a lower cost single speed version. It had an Amac carburettor, Runbaken magneto and Best and Lloyd lubrication. The spring front-fork was an HJ patent whereby two curled leaf-springs replaced the normal solid-steel top links of a Druid-pattern fork.
Possible also used 269cc Liberty and Villiers engines
No further models were offered.
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