1927 - 1929
OPRA (Officine di Precisione Romane Automobilistiche) was a historic brand of motorcycles. This Italian company in Roma was owned by Count Bonmartini. The OPRA, developed by Carlo Giannini and Pietro Remor (known from the later for Gilera and MV Agusta racing),was a 500 cc racer with transverse air-cooled OHC four cylinder engine. There were also 'normale' motorcycles racers based on this, but they was no real commercial success.
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