What is the engine displacement of the 1979 Yamaha RX 125?

The 1979 Yamaha RX 125 has an engine displacement of 125.00 ccm (7.63 cubic inches).

How much horsepower does the 1979 Yamaha RX 125 have?

The 1979 Yamaha RX 125 produces 13.00 HP (9.5 kW)) @ 7000 RPM of power.

How much does the 1979 Yamaha RX 125 weigh?

The 1979 Yamaha RX 125 has a dry weight of 96.0 kg (211.6 pounds).

1979 Yamaha RX 125 Price, Specs, Review

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Review

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The 1979 Yamaha RX 125 emerges from a lineage of Yamaha's lightweight two-stroke motorcycles, designed to offer accessible and reliable transport in an era when such machines were vital for daily commuting and recreational riding. This particular model arrived during a period of intense competition in the 125cc segment, directly challenging contemporaries like the Suzuki TS125 and the Honda TL125. It represented a straightforward, no-nonsense approach to motorcycling, focusing on practicality and a responsive riding experience for a broad demographic.

At its heart, the RX 125 featured a 125.00 ccm (7.63 cubic inches) engine, a single-cylinder, two-stroke unit known for its simplicity and lively character. This powerplant generated a respectable 13.00 HP (9.5 kW) at 7000 RPM, coupled with 13.34 Nm (1.4 kgf-m or 9.8 ft.lbs) of torque, also peaking at 7000 RPM. With a dry weight of just 96.0 kg (211.6 pounds), the RX 125 offered a favorable power-to-weight ratio for its class, allowing for spirited acceleration and nimble handling. Its 10.00-litre (2.64-gallon) fuel tank provided a practical range for its intended use, making it a viable option for daily errands or weekend excursions.

Riding the RX 125 was characterized by its light and agile nature. The motorcycle's low weight contributed significantly to its easy maneuverability, making it approachable for new riders while still offering an engaging experience for those with more miles under their belt. Its upright stance and relatively neutral ergonomics meant comfortable cruising, whether navigating urban environments or exploring country lanes. The two-stroke engine delivered its power with a characteristic eagerness, requiring riders to keep the revs up to extract its full potential, a trait common to many lightweight two-strokes of the period.

As a Vintage category motorcycle, the 1979 Yamaha RX 125 appeals to enthusiasts seeking a classic two-stroke experience, collectors appreciating its historical significance, and riders who value the straightforward mechanics and raw feel of older machines. Its relative simplicity means easier maintenance for those inclined to work on their bikes. The RX 125 stands as a testament to the era of accessible, fun, and functional motorcycling, offering a direct link to Yamaha's two-stroke heritage for those who appreciate its enduring charm.

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Pros (Advantages)

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✅ Why buy this bike?

The Yamaha RX 125 1979 is known for its durable and reliable two-stroke engine, providing excellent performance for its time.
It has a lightweight and nimble chassis, making it easy to handle and maneuver, especially in urban environments.
The motorcycle has a classic design that appeals to vintage motorcycle enthusiasts, with a retro styling that has stood the test of time.
The Yamaha RX 125 1979 offers a smooth and responsive ride, with a good power-to-weight ratio that ensures a fun and engaging riding experience.
It is relatively easy to maintain and repair, with a strong aftermarket support for spare parts and customization options available for enthusiasts.

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Cons (Disadvantages)

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⚠️ Things to consider

The Yamaha RX 125 1979 may have limited aftermarket parts availability due to its age, making repairs and maintenance more challenging.
The performance of the Yamaha RX 125 1979 may not be as impressive compared to modern motorcycles, as technology and engineering have significantly advanced since its release.
The Yamaha RX 125 1979 may lack some of the modern features and conveniences found in newer motorcycles, such as advanced safety systems or digital displays.
The fuel efficiency of the Yamaha RX 125 1979 may not be as good as newer models, resulting in higher fuel costs for daily use.
Due to its age, the Yamaha RX 125 1979 may require more frequent maintenance and upkeep to keep it running smoothly, which can be time-consuming and costly for owners.

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Alternatives

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⚖️ Comparison & Competition

Honda CB125F: A reliable and fuel-efficient commuter bike, the Honda CB125F offers a smooth ride and easy handling for urban environments.
Suzuki GS125: Known for its durability and low maintenance costs, the Suzuki GS125 is a popular choice for new riders looking for a practical and affordable motorcycle.
Kawasaki KSR Pro: A fun and nimble mini motorcycle, the Kawasaki KSR Pro is perfect for zipping around town with its compact size and sporty design.
Royal Enfield Bullet 350: With its classic styling and thumping engine, the Royal Enfield Bullet 350 is a timeless motorcycle that exudes retro charm and character.
KTM Duke 125: Ideal for those seeking a more sporty and aggressive ride, the KTM Duke 125 offers excellent performance and handling, making it a popular choice among young riders