During the 1972 season Yamaha's works riders campaigned machines in the 250cc and 350cc classes that utilised liquid cooling and which acted as prototypes for the following season's production racers. The liquid cooling employed on the new TZ's sought to address the Achilles heel of the TR3/TD3 air cooled racers - their propensity to "nip-up" - and established a line of racing machinery whose success is unparalleled in motorcycle road racing history. The "A" series models newly developed engine was housed in a set of cycle parts that were essentially the same as those employed by the previous air-cooled racers with drum brakes and twin rear shock absorbers. The subsequent years "B" series machines continued in much the same way. However, a major revision occurred in 1976 with the introduction of the "C" series. The new models employed a monoshock rear end and front and rear disc brakes. The engine had benefited from the ongoing development of the works supported bikes resulting in the 250cc producing 52bhp whilst the 350cc machine had gained 4bhp. Subsequent development was limited to detail changes until the much needed introduction of the "F" in 1979, a consequence of Yamaha's R&D resources being committed to the development of new road models.
The machine offered is a TZ350E dating from 1978. It is presented in "good overall condition" having formed part of a private collection for a number of years.
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