What is the engine displacement of the 1987 Yamaha YZ490?

The 1987 Yamaha YZ490 has an engine displacement of 490.00 ccm (29.90 cubic inches).

How much horsepower does the 1987 Yamaha YZ490 have?

The 1987 Yamaha YZ490 produces 55.00 HP (40.1 kW)) @ 7000 RPM of power.

How much does the 1987 Yamaha YZ490 weigh?

The 1987 Yamaha YZ490 has a dry weight of 107.0 kg (236.0 pounds).

1987 Yamaha YZ490 Price, Specs, Review

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Review

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The 1987 Yamaha YZ490 represents a significant chapter in the history of open-class motocross. As one of the final iterations of Yamaha's air-cooled two-stroke giants, it stood alongside contemporaries like the Honda CR500R and Kawasaki KX500, battling for supremacy on tracks worldwide. This model year was a refinement of a long lineage of YZ big-bore machines, aiming to provide riders with raw power and a robust platform for competitive racing before the widespread adoption of liquid cooling in this displacement class.

At its heart, the YZ490 housed a potent 490.00 ccm (29.90 cubic inches) two-stroke engine. This single-cylinder powerhouse was rated at 55.00 HP (40.1 kW) delivered at 7000 RPM, a formidable output for its time. With a dry weight of 107.0 kg (236.0 pounds), the YZ490 boasted a power-to-weight ratio that demanded respect and skill from its rider. This engine configuration, while powerful, was known for its distinct power delivery, characteristic of large-displacement two-strokes, requiring precise throttle control to manage its substantial output effectively.

Riding the YZ490 was an experience defined by its raw power and the physical demands it placed on the rider. Its motocross-specific chassis and suspension were designed for aggressive off-road competition, offering significant travel to absorb large impacts. The ergonomics were typical of a 1980s dirt bike, featuring a relatively tall seat height and a narrow profile to facilitate movement over the machine. Comfort was secondary to performance and control in the heat of battle, with the YZ490 providing a direct and unfiltered connection to the terrain.

Categorized as a Vintage motorcycle today, the 1987 YZ490 was originally aimed at experienced motocross racers and serious off-road enthusiasts who craved the challenge and reward of an open-class two-stroke. It appealed to those who appreciated the simplicity and incredible punch of air-cooled big bores. For collectors and vintage racers, the YZ490 remains a sought-after machine, representing the pinnacle of a bygone era in motocross engineering and offering a visceral riding experience that few modern bikes can replicate.

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Pros (Advantages)

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✅ Why buy this bike?

The Yamaha YZ490 1987 is known for its powerful engine, providing excellent performance and acceleration.
It has a durable and robust frame, making it suitable for off-road riding and handling rough terrains.
The suspension system on the YZ490 is highly adjustable, allowing riders to customize their ride experience based on their preferences.
The bike has a reputation for reliability and longevity, requiring minimal maintenance and upkeep.
It has a classic and iconic design that appeals to vintage motorcycle enthusiasts and collectors.

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Cons (Disadvantages)

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⚠️ Things to consider

The Yamaha YZ490 1987 is known for its heavy weight, making it more challenging to handle and maneuver, especially for riders with less experience or smaller stature.
The bike's suspension system can be too stiff for some riders, causing discomfort and reduced control on rough or bumpy terrain.
The engine can be prone to overheating in certain riding conditions, potentially leading to performance issues and the need for more frequent maintenance.
The fuel consumption of the YZ490 1987 is relatively high compared to newer, more fuel-efficient models, resulting in more frequent refueling stops during longer rides.
The bike's outdated design and technology may make it more difficult to find replacement parts or accessories, potentially leading to longer wait times for repairs and increased maintenance costs.

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Alternatives

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⚖️ Comparison & Competition

Honda CR500R: The Honda CR500R is a powerful and reliable two-stroke motocross bike known for its strong engine performance and agile handling.
Kawasaki KX500: The Kawasaki KX500 is another legendary two-stroke motocross bike with a big displacement engine, offering high-speed thrills and excellent off-road capabilities.
Suzuki RM500: The Suzuki RM500 is a competitive motocross bike with a smooth power delivery and responsive handling, making it a popular choice among off-road enthusiasts.
KTM 495 MX: The KTM 495 MX is a rare and sought-after vintage motocross bike known for its robust construction, strong power output, and impressive suspension system.
Husqvarna CR500: The Husqvarna CR500 is a classic motocross bike with a legendary reputation for its performance and durability, making it a favorite among retro bike collectors and riders seeking a nostalgic riding experience

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License Class (EU)

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With 55 HP, requires full Class A license. Riders must be 24+ or have 2 years A2 experience (20+).

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Fuel Economy & Running Costs

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Estimated average for 490cc class: 45-60 mpg (4.0-5.5 L/100km)

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Insurance Class

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Insurance grouping for Yamaha YZ490 (490cc):