Classic motorcycle head-to-head

BMW R90S vs Kawasaki AR125

BMW R90S scores 88/100 overall against Kawasaki AR125 on 77/100. On the road: 83–65. As classics: 93–88. Overall result: BMW R90S.

The numbers

Category-by-category result

CategoryBMW R90SKawasaki AR125Advantage
road
PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field.86BMW R90S
HandlingSteering, stability, weight and real-road manners.88Level
BrakingDirect comparison of real stopping ability without an age allowance.77Level
ReliabilityEngine, electrics and general dependability when properly maintained.97BMW R90S
Ease of ownershipMaintenance, parts supply and access to specialist knowledge.96BMW R90S
ComfortRiding position, vibration and suitability for longer journeys.95BMW R90S
classic
StylingDesign quality, visual presence and period appeal.109BMW R90S
Historical importanceInfluence on motorcycling and importance within its era.98BMW R90S
Collector appealLong-term desirability among classic motorcycle enthusiasts.109BMW R90S
CharacterSound, feel, personality and memorable riding experience.89Kawasaki AR125

Choose the BMW R90S if…

you want high-speed touring ability, engineering quality and one of BMW's most significant sporting classics.

Choose the Kawasaki AR125 if…

you want a sporty liquid-cooled 1980s learner bike with lively performance and unmistakable Kawasaki styling.

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Background

History

BMW R90S

The BMW R90S was produced from 1973–1976 and used a 898cc air-cooled opposed twin. Within this comparison library it stands out particularly for styling, collector appeal, reliability. It suits riders who value the qualities described in its original profile rather than choosing by specification alone.

Kawasaki AR125

The Kawasaki AR125 was produced from 1982–1989 and used a 123cc liquid-cooled two-stroke single. Within this comparison library it stands out particularly for styling, collector appeal, character. 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?

BMW R90S

  • Its production span in this library runs from 1973 to 1976.
  • The recorded engine description is: 898cc air-cooled opposed twin.
  • Its strongest comparison scores are styling, collector appeal, reliability.

Kawasaki AR125

  • Its production span in this library runs from 1982 to 1989.
  • The recorded engine description is: 123cc liquid-cooled two-stroke single.
  • Its strongest comparison scores are styling, collector appeal, character.
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Present-day appeal

Collector notes

BMW R90S

Collector interest is strongest where condition, originality and correct period details support the identity of the BMW R90S. 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.

Kawasaki AR125

Collector interest is strongest where condition, originality and correct period details support the identity of the Kawasaki AR125. 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.

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Before you buy

Buying checks

BMW R90S

  • Confirm the frame and engine identity match the advertised model and year.
  • Check cold starting, smoke, oil leaks and unusual mechanical noise.
  • 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.

Kawasaki AR125

  • 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

BMW R90S wins the direct on-the-road comparison. BMW R90S wins the classic-motorcycle comparison. BMW R90S takes the overall result after the road and classic scores are weighted equally.

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