What is the engine displacement of the 1970 Yamaha YAS 1?

The 1970 Yamaha YAS 1 has an engine displacement of 125.00 ccm (7.63 cubic inches).

How much horsepower does the 1970 Yamaha YAS 1 have?

The 1970 Yamaha YAS 1 produces 15.00 HP (10.9 kW)) @ 8500 RPM of power.

What is the top speed of the 1970 Yamaha YAS 1?

The 1970 Yamaha YAS 1 has a top speed of 110.0 km/h (68.4 mph).

1970 Yamaha YAS 1 Price, Specs, Review

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Review

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The Yamaha YAS 1 1970 holds a special place in motorcycle history as one of the pioneering models that helped establish Yamaha as a formidable player in the industry. This classic bike is renowned for its sleek design, powerful performance, and reliable engineering. With a 125cc two-stroke engine, the YAS 1 delivered impressive speed and agility, making it a popular choice among riders looking for a thrilling experience on the road. Despite being more than 50 years old, the Yamaha YAS 1 1970 continues to hold its value among motorcycle enthusiasts and collectors. Its timeless design and exceptional build quality have stood the test of time, earning it a reputation for being a sought-after vintage motorcycle. Whether you're a seasoned rider looking to add a piece of history to your collection or a newcomer wanting to experience the magic of classic motorcycles, the Yamaha YAS 1 1970 offers a blend of performance, style, and nostalgia that is hard to beat.

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Pros (Advantages)
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✅ Why buy this bike?

The Yamaha YAS 1 1970 is known for its reliable and durable two-stroke engine, providing a good balance of power and efficiency.

It features a sleek and classic design that has stood the test of time, appealing to vintage motorcycle enthusiasts.

The handling and maneuverability of the Yamaha YAS 1 are excellent, making it a joy to ride on twisty roads or in urban environments.

The bike is relatively lightweight, which contributes to its agility and ease of control, especially for newer riders.

Maintenance and servicing for the Yamaha YAS 1 are generally straightforward and parts are still available, making it a practical choice for restoration projects.

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Cons (Disadvantages)
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⚠️ Things to consider

Limited power output compared to modern motorcycles, may not be suitable for high-speed riding.

Outdated suspension and braking technology, potentially compromising safety and handling.

Difficulty in finding replacement parts due to the age of the motorcycle.

Lack of modern features such as ABS, traction control, and other electronic aids found on newer bikes.

Reliability issues may arise due to wear and tear on older components.

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Alternatives
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⚖️ Comparison & Competition

Honda CB750

Introduced in 1969, the CB750 is considered one of the first superbikes and revolutionized the motorcycle industry with its powerful 750cc engine and modern design.

Kawasaki H1 Mach III

Known for its blistering speed, the H1 Mach III was a 500cc 2-stroke triple that was popular in the early 1970s for its raw power and aggressive styling.

Suzuki GT750 Water Buffalo

Launched in 1971, the GT750 was Suzuki's flagship model known for its unique water-cooled 750cc 2-stroke engine, making it a popular choice for touring.

BMW R75/5

A classic touring motorcycle, the R75/5 featured a 750cc air-cooled boxer engine and was praised for its comfortable ride quality and reliability.

Triumph Bonneville T120

A British classic, the Bonneville T120 was powered by a 650cc parallel-twin engine and was renowned for its timeless design and smooth performance

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License Class (EU)
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The Yamaha YAS 1, with its 125 cc engine and 15 HP, qualifies for an A1 license. Riders 16+ can ride it.

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Fuel Economy & Running Costs
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Estimated average for 125cc class: 75-100 mpg (2.5-3.5 L/100km)

⛽ Tank: 9.50 litres (2.51 gallons)

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Insurance Class
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Insurance grouping for Yamaha YAS 1 (125cc):

📋 Group 1-5 — entry-level, lowest premiums

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Insurance Calculator (UK est.)
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Personalised premium estimate for the Yamaha YAS 1 (UK rates):

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💡 Estimate based on UK market averages. For real quotes, compare on Compare the Market, MoneySuperMarket, GoCompare.

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Price Estimate
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Estimated price range for the Yamaha YAS 1 based on comparable motorcycles:

AVERAGE

$2,015

📊 Category-based (19 motorcycles) · Approximate (USD)

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Buy New & Used
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Find new and used Yamaha YAS 1 1970 listings:

🛒 eBay Motors 🏍️ Cycle Trader 🇬🇧 Auto Trader UK 🔍 Google Listings

💡 Third-party listings. MotoBike Info is informational only.

👤 Final premium varies by rider age, history, location.

⚙️ Full Specifications

No specifications found.

📋 Detailed Review

The Yamaha YAS 1 1970 holds a special place in motorcycle history as one of the pioneering models that helped establish Yamaha as a formidable player in the industry. This classic bike is renowned for its sleek design, powerful performance, and reliable engineering. With a 125cc two-stroke engine, the YAS 1 delivered impressive speed and agility, making it a popular choice among riders looking for a thrilling experience on the road. Despite being more than 50 years old, the Yamaha YAS 1 1970 continues to hold its value among motorcycle enthusiasts and collectors. Its timeless design and exceptional build quality have stood the test of time, earning it a reputation for being a sought-after vintage motorcycle. Whether you're a seasoned rider looking to add a piece of history to your collection or a newcomer wanting to experience the magic of classic motorcycles, the Yamaha YAS 1 1970 offers a blend of performance, style, and nostalgia that is hard to beat.

🎬 Video Reviews

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📷 Gallery

⚡ Key Specs

Displacement125.00 ccm (7.63 cubic inches)

Power15.00 HP (10.9 kW)) @ 8500 RPM

Top Speed110.0 km/h (68.4 mph)

Fuel Cap.9.50 litres (2.51 gallons)

Gearbox5-speed

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Yamaha YAS 1

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