Classic motorcycle head-to-head

Kawasaki KMX125 vs Yamaha YB100

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.

The numbers

Category-by-category result

CategoryKawasaki KMX125Yamaha YB100Advantage
road
PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field.53Kawasaki KMX125
HandlingSteering, stability, weight and real-road manners.87Kawasaki KMX125
BrakingDirect comparison of real stopping ability without an age allowance.75Kawasaki KMX125
ReliabilityEngine, electrics and general dependability when properly maintained.78Yamaha YB100
Ease of ownershipMaintenance, parts supply and access to specialist knowledge.79Yamaha YB100
ComfortRiding position, vibration and suitability for longer journeys.66Level
classic
StylingDesign quality, visual presence and period appeal.87Kawasaki KMX125
Historical importanceInfluence on motorcycling and importance within its era.77Level
Collector appealLong-term desirability among classic motorcycle enthusiasts.76Kawasaki KMX125
CharacterSound, feel, personality and memorable riding experience.87Kawasaki KMX125

Choose the Kawasaki KMX125 if…

you want a lively 1980s trail bike with learner nostalgia, good road manners and genuine off-road style.

Choose the Yamaha YB100 if…

you want a simple, dependable lightweight with classic commuter charm and easy ownership.

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Background

History

Kawasaki KMX125

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.

Yamaha YB100

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.

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Interesting details

Did you know?

Kawasaki KMX125

  • Its production span in this library runs from 1986 to 1989.
  • The recorded engine description is: 124cc liquid-cooled two-stroke single.
  • Its strongest comparison scores are styling, handling, character.

Yamaha YB100

  • Its production span in this library runs from 1973 to 1989.
  • The recorded engine description is: 97cc air-cooled two-stroke single.
  • Its strongest comparison scores are ownership appeal, reliability, styling.
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Present-day appeal

Collector notes

Kawasaki KMX125

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.

Yamaha YB100

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.

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Before you buy

Buying checks

Kawasaki KMX125

  • 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.

Yamaha YB100

  • 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

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Final result

The verdict

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.

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