
Photo: PSParrot from England · CC BY 2.0
Classic motorcycle head-to-head
Kawasaki KH400 scores 81/100 overall against Kawasaki H1 500 Mach III on 79/100. On the road: 67–60. As classics: 95–98. Overall result: Kawasaki KH400.

Photo: PSParrot from England · CC BY 2.0

Photo: 1969_Kawasaki_500_H1_MachIII.jpg: Mike Schinkel derivative work: Ligabo (talk) · CC BY 2.0
The numbers
| Category | Kawasaki KH400 | Kawasaki H1 | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 8 | 9 | Kawasaki H1 |
| HandlingSteering, stability, weight and real-road manners. | 7 | 5 | Kawasaki KH400 |
| BrakingDirect comparison of real stopping ability without an age allowance. | 7 | 5 | Kawasaki KH400 |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 6 | 6 | Level |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 6 | 6 | Level |
| ComfortRiding position, vibration and suitability for longer journeys. | 6 | 5 | Kawasaki KH400 |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 9 | 9 | Level |
| Historical importanceInfluence on motorcycling and importance within its era. | 9 | 10 | Kawasaki H1 |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 10 | 10 | Level |
| CharacterSound, feel, personality and memorable riding experience. | 10 | 10 | Level |
you want charismatic Kawasaki triple-cylinder performance in a more manageable package than the larger Mach models.
you want explosive two-stroke acceleration, outrageous period character and one of Kawasaki's most famous motorcycles.
Background
The Kawasaki KH400 was produced from 1976–1978 and used a 400cc air-cooled two-stroke triple. Within this comparison library it stands out particularly for collector appeal, character, styling. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
The Kawasaki H1 500 Mach III was produced from 1969–1976 and used a 498cc air-cooled two-stroke triple. Within this comparison library it stands out particularly for historic importance, collector appeal, character. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
Interesting details
Present-day appeal
Collector interest is strongest where condition, originality and correct period details support the identity of the Kawasaki KH400. Its library score for collector appeal is 10/10. Values and desirability can vary substantially between years, specifications and restoration quality, so individual examples should be assessed on their own evidence.
Collector interest is strongest where condition, originality and correct period details support the identity of the Kawasaki H1 500 Mach III. Its library score for historic importance is 10/10. Values and desirability can vary substantially between years, specifications and restoration quality, so individual examples should be assessed on their own evidence.
Before you buy
Period opposition
Final result
Kawasaki KH400 wins the direct on-the-road comparison. Kawasaki H1 500 Mach III wins the classic-motorcycle comparison. Kawasaki KH400 takes the overall result after the road and classic scores are weighted equally.