Classic motorcycle head-to-head

Yamaha RD125DX vs Honda CB125S

Yamaha RD125DX scores 77/100 overall against Honda CB125S on 71/100. On the road: 63–67. As classics: 90–75. Overall result: Yamaha RD125DX.

The numbers

Category-by-category result

CategoryYamaha RD125DXHonda CB125SAdvantage
road
PerformanceDirect comparison of power, acceleration and usable performance across the pre-1990 classic field.54Yamaha RD125DX
HandlingSteering, stability, weight and real-road manners.87Yamaha RD125DX
BrakingDirect comparison of real stopping ability without an age allowance.65Yamaha RD125DX
ReliabilityEngine, electrics and general dependability when properly maintained.79Honda CB125S
Ease of ownershipMaintenance, parts supply and access to specialist knowledge.79Honda CB125S
ComfortRiding position, vibration and suitability for longer journeys.56Honda CB125S
classic
StylingDesign quality, visual presence and period appeal.98Yamaha RD125DX
Historical importanceInfluence on motorcycling and importance within its era.98Yamaha RD125DX
Collector appealLong-term desirability among classic motorcycle enthusiasts.97Yamaha RD125DX
CharacterSound, feel, personality and memorable riding experience.97Yamaha RD125DX

Choose the Yamaha RD125DX if…

you want a proper twin-cylinder learner motorcycle with disc-brake styling, a crisp exhaust note and strong 1970s nostalgia.

Choose the Honda CB125S if…

you want an economical, dependable and approachable Honda single with traditional CB styling.

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Background

History

Yamaha RD125DX

The Yamaha RD125DX was produced from 1975–1982 and used a 124cc air-cooled two-stroke parallel twin. 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.

Honda CB125S

The Honda CB125S was produced from 1971–1985 and used a approximately 125cc air-cooled four-stroke single. Within this comparison library it stands out particularly for reliability, ownership appeal, 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?

Yamaha RD125DX

  • Its production span in this library runs from 1975 to 1982.
  • The recorded engine description is: 124cc air-cooled two-stroke parallel twin.
  • Its strongest comparison scores are styling, historic importance, collector appeal.

Honda CB125S

  • Its production span in this library runs from 1971 to 1985.
  • The recorded engine description is: approximately 125cc air-cooled four-stroke single.
  • Its strongest comparison scores are reliability, ownership appeal, styling.
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Present-day appeal

Collector notes

Yamaha RD125DX

Collector interest is strongest where condition, originality and correct period details support the identity of the Yamaha RD125DX. 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.

Honda CB125S

Collector interest is strongest where condition, originality and correct period details support the identity of the Honda CB125S. Its library score for reliability 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

Yamaha RD125DX

  • 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.

Honda CB125S

  • Confirm the frame and engine identity match the advertised model and year.
  • Check cold starting, smoke, oil leaks and unusual mechanical noise.
  • Check vibration-related fasteners, primary drive condition and signs of persistent oil leakage.
  • 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

Honda CB125S wins the direct on-the-road comparison. Yamaha RD125DX wins the classic-motorcycle comparison. Yamaha RD125DX takes the overall result after the road and classic scores are weighted equally.

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