
Photo: webike.net · Public domain
Classic motorcycle head-to-head
Kawasaki KMX125 scores 71/100 overall against Yamaha YB100 on 66/100. On the road: 67–63. As classics: 75–68. Overall result: Kawasaki KMX125.

Photo: webike.net · Public domain

Photo: cbr250.com · Public domain
The numbers
| Category | Kawasaki KMX125 | Yamaha YB100 | Advantage |
|---|---|---|---|
| road | |||
| PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field. | 5 | 3 | Kawasaki KMX125 |
| HandlingSteering, stability, weight and real-road manners. | 8 | 7 | Kawasaki KMX125 |
| BrakingDirect comparison of real stopping ability without an age allowance. | 7 | 5 | Kawasaki KMX125 |
| ReliabilityEngine, electrics and general dependability when properly maintained. | 7 | 8 | Yamaha YB100 |
| Ease of ownershipMaintenance, parts supply and access to specialist knowledge. | 7 | 9 | Yamaha YB100 |
| ComfortRiding position, vibration and suitability for longer journeys. | 6 | 6 | Level |
| classic | |||
| StylingDesign quality, visual presence and period appeal. | 8 | 7 | Kawasaki KMX125 |
| Historical importanceInfluence on motorcycling and importance within its era. | 7 | 7 | Level |
| Collector appealLong-term desirability among classic motorcycle enthusiasts. | 7 | 6 | Kawasaki KMX125 |
| CharacterSound, feel, personality and memorable riding experience. | 8 | 7 | Kawasaki KMX125 |
you want a lively 1980s trail bike with learner nostalgia, good road manners and genuine off-road style.
you want a simple, dependable lightweight with classic commuter charm and easy ownership.
Background
The Kawasaki KMX125 was produced from 1986–1989 and used a 124cc liquid-cooled two-stroke single. Within this comparison library it stands out particularly for styling, handling, character. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.
The Yamaha YB100 was produced from 1973–1989 and used a 97cc air-cooled two-stroke single. Within this comparison library it stands out particularly for ownership appeal, reliability, styling. 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 KMX125. Its library score for styling is 8/10. 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 Yamaha YB100. Its library score for ownership appeal 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
Kawasaki KMX125 wins the direct on-the-road comparison. Kawasaki KMX125 wins the classic-motorcycle comparison. Kawasaki KMX125 takes the overall result after the road and classic scores are weighted equally.