Cooper was a brand of
off-road motorcycles made in
Mexico using engine parts made in
Italy and later, engines made by
Sachs. Imported into the
United States in the early
1970's by Frank Cooper and sold as Cooper. Frank Cooper was a dealer for
Maico when he contracted with Mexican motorcycle company, Islo to produce an
Enduro and also a
motocross model.
Islo also made a trials bike from 1971 - 1975 called GRM (Grapevine Racing Motors) that was imported to the USA, for Bill Grapevine, who designed the bike. Islo also supplied the engines for California's Jones Motorsports who had the AMMEX motorcycle franchise. The Islo manufacturing facilities and name were bought by Honda around 1982