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1973 Kawasaki H1 500 Mach III - Widowmaker

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1973 Kawasaki H1 500 Mach III - Widowmaker

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Upon production, the 500cc three-cylinder two-stroke motor was the fastest in the world. First appearing the U.S. in 1967 the H1 (also referred to as the Mach III) was quickly dubbed “The Widowmaker” due to its outrageous power output. With a well-sorted launch, this bike runs a quarter mile in the low 13-second range at a trap speed of just above 100 mph — benchmarks Kawasaki had set for themselves while secretly designing the H1.

Another positive for the Mach III is its reliability, unheard of in high-performance motorcycles of the period. This is partially due to the CDI ignition, which produces easy kickstarts.

In 1973 the second-generation of the H1 was released. In addition to the disc brake and steering dampener provided the yer prior, our model’s body features the “race tail” which shrouds the taillight. An air scoop was also added to the rear brake.

With only 7,828 miles on the odometer our bike runs excellently. All of its legendary speed can be felt in jarring abundance, even in comparison to modern sport machines. The Widowmaker is easily among the most enjoyable and unique rides of the era.

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