Kawasaki Z1 900
87/100 Overall
73 On the road100 As a classic
Classic motorcycle head-to-head
Kawasaki Z1 900 vs Suzuki GT550
Kawasaki Z1 900 scores 87/100 overall against Suzuki GT550 on 77/100. On the road: 73–73. As classics: 100–80. Overall result: Kawasaki Z1 900.
Suzuki GT550
77/100 Overall
73 On the road80 As a classic
The numbers
Category-by-category result
| Category | Kawasaki Z1 | Suzuki GT550 | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 9 | 8 | Kawasaki Z1 |
| HandlingSteering, stability, weight and real-road manners. | 6 | 7 | Suzuki GT550 |
| BrakingDirect comparison of real stopping ability without an age allowance. | 6 | 7 | Suzuki GT550 |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 8 | 8 | Level |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 8 | 7 | Kawasaki Z1 |
| ComfortRiding position, vibration and suitability for longer journeys. | 7 | 7 | Level |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 10 | 8 | Kawasaki Z1 |
| Historical importanceInfluence on motorcycling and importance within its era. | 10 | 7 | Kawasaki Z1 |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 10 | 8 | Kawasaki Z1 |
| CharacterSound, feel, personality and memorable riding experience. | 10 | 9 | Kawasaki Z1 |
Choose the Kawasaki Z1 if…
you want muscular 1970s superbike performance, imposing styling and major Japanese collector status.
Choose the Suzuki GT550 if…
you want smooth two-stroke triple character, useful road manners and an appealing alternative to the better-known GT750.
Background
History
Kawasaki Z1
The Kawasaki Z1 900 was produced from 1972–1975 and used a 903cc air-cooled DOHC inline four. Within this comparison library it stands out particularly for styling, historic importance, collector appeal. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
Suzuki GT550
The Suzuki GT550 was produced from 1972–1977 and used a 543cc air-cooled two-stroke triple. Within this comparison library it stands out particularly for character, styling, reliability. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
Interesting details
Did you know?
Kawasaki Z1
- Its production span in this library runs from 1972 to 1975.
- The recorded engine description is: 903cc air-cooled DOHC inline four.
- Its strongest comparison scores are styling, historic importance, collector appeal.
Suzuki GT550
- Its production span in this library runs from 1972 to 1977.
- The recorded engine description is: 543cc air-cooled two-stroke triple.
- Its strongest comparison scores are character, styling, reliability.
Present-day appeal
Collector notes
Kawasaki Z1
Collector interest is strongest where condition, originality and correct period details support the identity of the Kawasaki Z1 900. Its library score for styling 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.
Suzuki GT550
Collector interest is strongest where condition, originality and correct period details support the identity of the Suzuki GT550. Its library score for character 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
Buying checks
Kawasaki Z1
- Confirm the frame and engine identity match the advertised model and year.
- Check cold starting, smoke, oil leaks and unusual mechanical noise.
- Check carburettor balance, charging output and exhaust condition across all cylinders.
- Inspect the frame, wheels, brakes and suspension for wear, damage or poor repairs.
- Verify that important model-specific parts have not been replaced with incorrect later components.
- Review the paperwork, ownership history and any restoration invoices before purchase.
Suzuki GT550
- Confirm the frame and engine identity match the advertised model and year.
- Check cold starting, smoke, oil leaks and unusual mechanical noise.
- Check the oil-injection or premix arrangement, crank seals and exhaust condition carefully.
- Inspect the frame, wheels, brakes and suspension for wear, damage or poor repairs.
- Verify that important model-specific parts have not been replaced with incorrect later components.
- Review the paperwork, ownership history and any restoration invoices before purchase.
Period opposition
Historic rivals
Rivals to the Kawasaki Z1
Rivals to the Suzuki GT550
Final result
The verdict
On the road the motorcycles finish level. Kawasaki Z1 900 wins the classic-motorcycle comparison. Kawasaki Z1 900 takes the overall result after the road and classic scores are weighted equally.