Kawasaki Z1 900
87/100 Overall
73 On the road100 As a classic
Classic motorcycle head-to-head
Kawasaki Z1 900 vs Yamaha FS1-E
Kawasaki Z1 900 scores 87/100 overall against Yamaha FS1-E on 77/100. On the road: 73–55. As classics: 100–98. Overall result: Kawasaki Z1 900.
Yamaha FS1-E
77/100 Overall
55 On the road98 As a classic
The numbers
Category-by-category result
| Category | Kawasaki Z1 | Yamaha FS1-E | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 9 | 3 | Kawasaki Z1 |
| HandlingSteering, stability, weight and real-road manners. | 6 | 7 | Yamaha FS1-E |
| BrakingDirect comparison of real stopping ability without an age allowance. | 6 | 4 | Kawasaki Z1 |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 8 | 7 | Kawasaki Z1 |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 8 | 8 | Level |
| ComfortRiding position, vibration and suitability for longer journeys. | 7 | 4 | Kawasaki Z1 |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 10 | 9 | Kawasaki Z1 |
| Historical importanceInfluence on motorcycling and importance within its era. | 10 | 10 | Level |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 10 | 10 | Level |
| CharacterSound, feel, personality and memorable riding experience. | 10 | 10 | Level |
Choose the Kawasaki Z1 if…
you want muscular 1970s superbike performance, imposing styling and major Japanese collector status.
Choose the Yamaha FS1-E if…
you want the defining British 1970s sports moped, with huge nostalgia, lively styling and an unforgettable place in learner-bike culture.
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.
Yamaha FS1-E
The Yamaha FS1-E was produced from 1973–1977 and used a 49cc air-cooled two-stroke single. 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
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.
Yamaha FS1-E
- Its production span in this library runs from 1973 to 1977.
- The recorded engine description is: 49cc air-cooled two-stroke single.
- Its strongest comparison scores are historic importance, collector appeal, character.
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.
Yamaha FS1-E
Collector interest is strongest where condition, originality and correct period details support the identity of the Yamaha FS1-E. 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
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.
Yamaha FS1-E
- 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 Yamaha FS1-E
Final result
The verdict
Kawasaki Z1 900 wins the direct on-the-road comparison. Kawasaki Z1 900 wins the classic-motorcycle comparison. Kawasaki Z1 900 takes the overall result after the road and classic scores are weighted equally.