What is the engine displacement of the 1981 Yamaha XJ 400 Seca?

The 1981 Yamaha XJ 400 Seca has an engine displacement of 398.00 ccm (24.29 cubic inches).

How much horsepower does the 1981 Yamaha XJ 400 Seca have?

The 1981 Yamaha XJ 400 Seca produces 45.00 HP (32.8 kW)) @ 10000 RPM of power.

What is the top speed of the 1981 Yamaha XJ 400 Seca?

The 1981 Yamaha XJ 400 Seca has a top speed of 162.5 km/h (101.0 mph).

How much does the 1981 Yamaha XJ 400 Seca weigh?

The 1981 Yamaha XJ 400 Seca has a dry weight of 176.0 kg (388.0 pounds).

1981 Yamaha XJ 400 Seca Price, Specs, Review

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Review

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The Yamaha XJ 400 Seca 1981 is a classic motorcycle that offers a blend of performance, reliability, and style. With its 399cc inline-four engine, the XJ 400 Seca delivers a smooth power delivery and agile handling, making it ideal for both city commuting and weekend rides. The bike's comfortable riding position and sleek design make it a standout choice for riders looking for a vintage aesthetic with modern performance. In terms of value, the Yamaha XJ 400 Seca 1981 remains a sought-after model among motorcycle enthusiasts and collectors. Its durable construction and timeless design have helped it retain its appeal over the years, with well-maintained examples commanding respectable prices in the market. Whether you're a seasoned rider looking for a retro ride or a beginner wanting a reliable and stylish motorcycle, the Yamaha XJ 400 Seca 1981 offers a winning combination of heritage and performance that is sure to impress.

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Pros (Advantages)
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✅ Why buy this bike?

The Yamaha XJ 400 Seca 1981 offers a lightweight and nimble ride, making it easy to maneuver in urban environments and tight spaces.

It features a reliable and durable engine, known for its longevity and low maintenance requirements.

The XJ 400 Seca has a comfortable riding position with a well-padded seat, making it suitable for longer rides without causing discomfort.

This motorcycle has a classic and timeless design that appeals to riders who appreciate vintage aesthetics.

The XJ 400 Seca offers a smooth and responsive performance, providing a fun and engaging riding experience for enthusiasts of all levels.

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Cons (Disadvantages)
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⚠️ Things to consider

Limited power output compared to newer motorcycles in the same class.

Outdated technology and features by today's standards.

Finding replacement parts may be challenging due to the age of the bike.

Less comfortable for long rides due to its more compact size and design.

Lower resale value compared to more modern motorcycles.

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Alternatives
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⚖️ Comparison & Competition

Honda CB400T Hawk

The Honda CB400T Hawk is a reliable and classic choice in the 400cc class, known for its smooth power delivery and comfortable ride quality.

Kawasaki KZ400

The Kawasaki KZ400 is a popular vintage option with a reputation for being easy to maintain and offering a good balance of performance and handling.

Suzuki GS400

The Suzuki GS400 is a versatile and agile bike that is well-suited for both city commuting and longer rides, thanks to its responsive engine and comfortable riding position.

BMW R45

The BMW R45 is a unique alternative with a horizontally opposed twin-cylinder engine, providing a distinctive riding experience and BMW's signature build quality.

Ducati Pantah 500

The Ducati Pantah 500 offers a blend of Italian style and performance, with a V-twin engine that delivers a thrilling ride and a design that stands out from the crowd

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License Class (EU)
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The Yamaha XJ 400 Seca produces 45 HP, fitting A2 license limits (max 35 kW / 47 HP). For riders 18+.

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Fuel Economy & Running Costs
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Estimated average for 398cc class: 45-60 mpg (4.0-5.5 L/100km)

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Insurance Class
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Insurance grouping for Yamaha XJ 400 Seca (398cc):

📋 Group 8-15 — mid-range

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Insurance Calculator (UK est.)
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Personalised premium estimate for the Yamaha XJ 400 Seca (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 XJ 400 Seca based on comparable motorcycles:

AVERAGE

$2,642

📊 Category-based (16 motorcycles) · Approximate (USD)

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Buy New & Used
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Find new and used Yamaha XJ 400 Seca 1981 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 XJ 400 Seca 1981 is a classic motorcycle that offers a blend of performance, reliability, and style. With its 399cc inline-four engine, the XJ 400 Seca delivers a smooth power delivery and agile handling, making it ideal for both city commuting and weekend rides. The bike's comfortable riding position and sleek design make it a standout choice for riders looking for a vintage aesthetic with modern performance. In terms of value, the Yamaha XJ 400 Seca 1981 remains a sought-after model among motorcycle enthusiasts and collectors. Its durable construction and timeless design have helped it retain its appeal over the years, with well-maintained examples commanding respectable prices in the market. Whether you're a seasoned rider looking for a retro ride or a beginner wanting a reliable and stylish motorcycle, the Yamaha XJ 400 Seca 1981 offers a winning combination of heritage and performance that is sure to impress.

🎬 Video Reviews

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📷 Gallery

⚡ Key Specs

Displacement398.00 ccm (24.29 cubic inches)

Power45.00 HP (32.8 kW)) @ 10000 RPM

Torque33.90 Nm (3.5 kgf-m or 25.0 ft.lbs) @ 8000 RPM

Top Speed162.5 km/h (101.0 mph)

Weight176.0 kg (388.0 pounds)

Gearbox6-speed

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Yamaha XJ 400 Seca

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