The technician from Vic (Barcelona) Antonio Roma “Portús” modified the engine of a Cota 309 incorporating a complete custom-built liquid cooling system, thus anticipating the factory which would not release a model of this type until 1992.

Photographed at the Museu Moto Bassella Montesa Cota Exhibition by Mike Ricketts.

The museum exhibition celebrated 50 years of the Montesa Cota observed trials competition motorcycle.

Included in the display were famed competition winners, trials machines for children and teenagers, and several of the latest high-tech four-strokes.

More information: Bassella Museu Moto

Montesa Cota Observed Trials Motorcycles