The New Zealand Castrol Six Hour Race was an endurance motorcycle race that was held for fifteen years at Manfeild, Palmerston North from 1974 to 1988.
[2] The race was characterised by its exclusive use of unmodified standard production motorcycles and a running start where the racers had to run to their machines before they could start.
There was special provisions that the machines were no older than 3 years old, which was a boon to the motorcycle industry in New Zealand at the time which saw a dramatic rise in the sale of Motorcycles after these events.
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