
Photo: Peprovira · CC BY-SA 4.0
Classic motorcycle head-to-head
Yamaha XJ650 scores 80/100 overall against Kawasaki GPz750 on 84/100. On the road: 82–78. As classics: 78–90. Overall result: Kawasaki GPz750.

Photo: Peprovira · CC BY-SA 4.0

Photo: John de Guerre · CC BY-SA 3.0
The numbers
| Category | Yamaha XJ650 | Kawasaki GPz750 | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 8 | 9 | Kawasaki GPz750 |
| HandlingSteering, stability, weight and real-road manners. | 8 | 8 | Level |
| BrakingDirect comparison of real stopping ability without an age allowance. | 8 | 8 | Level |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 9 | 8 | Yamaha XJ650 |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 8 | 7 | Yamaha XJ650 |
| ComfortRiding position, vibration and suitability for longer journeys. | 8 | 7 | Yamaha XJ650 |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 8 | 9 | Kawasaki GPz750 |
| Historical importanceInfluence on motorcycling and importance within its era. | 8 | 9 | Kawasaki GPz750 |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 7 | 9 | Kawasaki GPz750 |
| CharacterSound, feel, personality and memorable riding experience. | 8 | 9 | Kawasaki GPz750 |
you want smooth shaft-drive practicality, strong four-cylinder performance and a capable everyday 1980s road bike.
you want muscular early-1980s Kawasaki performance, distinctive GPz styling and a direct link to the developing superbike era.
Background
The Yamaha XJ650 was produced from 1980–1985 and used a 653cc air-cooled DOHC inline four. Within this comparison library it stands out particularly for reliability, styling, performance. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
The Kawasaki GPz750 was produced from 1982–1985 and used a 738cc air-cooled DOHC inline four. Within this comparison library it stands out particularly for styling, performance, historic importance. 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 Yamaha XJ650. Its library score for reliability is 9/10. 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 GPz750. Its library score for styling is 9/10. 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
Yamaha XJ650 wins the direct on-the-road comparison. Kawasaki GPz750 wins the classic-motorcycle comparison. Kawasaki GPz750 takes the overall result after the road and classic scores are weighted equally.