What is the engine displacement of the 1979 Yamaha RD 400?

The 1979 Yamaha RD 400 has an engine displacement of 399.00 ccm (24.35 cubic inches).

How much horsepower does the 1979 Yamaha RD 400 have?

The 1979 Yamaha RD 400 produces 43.00 HP (31.4 kW)) @ 7500 RPM of power.

What is the top speed of the 1979 Yamaha RD 400?

The 1979 Yamaha RD 400 has a top speed of 175.0 km/h (108.7 mph).

1979 Yamaha RD 400 Price, Specs, Review

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Review

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The 1979 Yamaha RD 400 stands as a significant machine in the lineage of two-stroke sportbikes, representing the culmination of Yamaha's RD series before the shift towards four-stroke engines. This particular model year, the RD 400F Daytona Special, refined the formula established by its predecessors, offering a potent and lightweight package that captured the spirit of the era. In its time, it competed directly with other middleweight contenders like the Suzuki GT380 and the Kawasaki KH400, offering a more performance-oriented edge.

At the heart of the '79 RD 400 is a 399.00 ccm (24.35 cubic inches) twin, two-stroke engine, a configuration renowned for its punchy power delivery. This powerplant generated a respectable 43.00 HP (31.4 kW) at 7500 RPM, propelling the bike to a top speed of 175.0 km/h (108.7 mph). Fuel capacity stood at 16.50 litres (4.36 gallons), offering a decent range for spirited rides. As a two-stroke, it demanded a specific riding style, rewarding riders who kept the engine in its powerband for optimal acceleration.

Riding characteristics of the RD 400 were defined by its lightweight chassis and responsive handling. Its sporty ergonomics, while not as aggressive as later track-focused machines, encouraged a forward-leaning stance, suitable for carving corners. The bike's overall nimble feel and immediate power delivery made it a joy on winding roads. While comfort was not its primary objective, the relatively upright seating position for a sportbike of its era made it manageable for longer excursions, though the distinctive two-stroke vibrations were always present.

Categorized as a vintage motorcycle today, the 1979 Yamaha RD 400 appeals to enthusiasts seeking a connection to the raw, visceral experience of classic two-stroke riding. Its straightforward mechanicals and engaging character make it a popular choice for collectors and riders who appreciate the distinctive sound and power delivery unique to this type of engine. It's a bike for those who value mechanical involvement and the unadulterated thrill of a bygone era.

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Pros (Advantages)

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✅ Why buy this bike?

The Yamaha RD 400 1979 is known for its lightweight and nimble handling, making it a joy to ride on twisty roads and through traffic.
It features a powerful 2-stroke engine that delivers a thrilling and responsive performance, especially at higher RPMs.
The RD 400's classic styling and design have stood the test of time, giving it a timeless appeal that many riders appreciate.
The bike's compact size and low seat height make it accessible to a wide range of riders, from beginners to more experienced motorcyclists.
With proper maintenance and care, the Yamaha RD 400 1979 has proven to be a reliable and durable motorcycle that can provide years of enjoyment for its owner.

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Cons (Disadvantages)

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⚠️ Things to consider

Limited fuel capacity leading to frequent stops for refueling.
Outdated braking system compared to modern standards, resulting in longer stopping distances.
High maintenance requirements due to its age and design complexity.
Uncomfortable seating position for long rides, causing fatigue and discomfort.
Lack of modern safety features such as ABS, traction control, and advanced suspension systems.

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Alternatives

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⚖️ Comparison & Competition

Kawasaki KH400
The Kawasaki KH400 is a two-stroke triple cylinder motorcycle known for its performance and agility. It offers a similar riding experience to the Yamaha RD 400 and is popular among vintage bike enthusiasts.
Suzuki GT380
The Suzuki GT380 is a classic two-stroke triple motorcycle that shares similarities with the Yamaha RD
It is praised for its smooth power delivery and retro styling.
Honda CB400F
The Honda CB400F is a four-cylinder motorcycle that provides a different riding experience compared to the Yamaha RD
It is known for its smooth powerband and reliability, making it a great choice for those seeking a more modern classic bike.
Ducati Pantah 500
The Ducati Pantah 500 is a V-twin motorcycle with a unique design and sporty performance. While it differs from the Yamaha RD 400 in terms of engine configuration, it offers a thrilling ride and Italian flair.
BMW R65
The BMW R65 is a classic air-cooled boxer twin motorcycle that offers a more laid-back riding experience compared to the Yamaha RD
It is appreciated for its reliability, comfort, and iconic design