What is the engine displacement of the 1981 Yamaha XS 400 Special?

The 1981 Yamaha XS 400 Special has an engine displacement of 392.00 ccm (23.92 cubic inches).

How much horsepower does the 1981 Yamaha XS 400 Special have?

The 1981 Yamaha XS 400 Special produces 27.00 HP (19.7 kW)) @ 7500 RPM of power.

What is the top speed of the 1981 Yamaha XS 400 Special?

The 1981 Yamaha XS 400 Special has a top speed of 139.0 km/h (86.4 mph).

What is the seat height of the 1981 Yamaha XS 400 Special?

The 1981 Yamaha XS 400 Special has a seat height of 780 mm (30.7 inches) If adjustable, lowest setting..

1981 Yamaha XS 400 Special Price, Specs, Review

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Review

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The 1981 Yamaha XS 400 Special represents a significant entry in Yamaha's mid-displacement twin-cylinder lineup, building upon the successful XS series. This particular "Special" variant often featured styling cues aimed at a more cruiser-esque aesthetic, distinguishing it from its standard counterparts. In its era, it competed directly with models like the Honda CM400 and the Kawasaki KZ440, offering riders a reliable and accessible option for commuting and weekend rides. Its enduring popularity among vintage enthusiasts today speaks to its fundamental design and user-friendly nature.

At the heart of the 1981 XS 400 Special is a 392.00 ccm (23.92 cubic inches) engine. This powerplant generates a respectable 27.00 HP (19.7 kW) at 7500 RPM, providing ample power for its class. Torque figures stand at 32.3 Nm (3.3 kgf-m or 23.8 ft.lbs) peaking at a slightly higher 8000 RPM, offering a decent pull through the gears. This combination allows the XS 400 Special to reach a top speed of 139.0 km/h (86.4 mph), making it capable of holding its own on most roads. Fuel capacity is a practical 14.00 litres (3.70 gallons), ensuring a decent range between fill-ups.

Riding characteristics of the XS 400 Special lean towards comfort and ease of use, typical of its "Vintage" category. The seat height, at 780 mm (30.7 inches) (lowest adjustable setting), is approachable for a wide range of riders, contributing to its manageability. The ergonomics are generally upright, promoting a relaxed riding posture that reduces fatigue on longer journeys. Its handling is predictable and stable, making it a forgiving motorcycle for those newer to riding or individuals seeking a straightforward, enjoyable experience without demanding aggressive maneuvers.

The 1981 Yamaha XS 400 Special primarily appeals to riders seeking a classic, carbureted motorcycle with a strong sense of nostalgia and mechanical simplicity. Its accessible performance and comfortable riding position make it a strong candidate for casual cruising, weekend excursions, or even as a reliable daily rider for those who appreciate vintage machinery. For enthusiasts looking to enter the world of classic motorcycling, or those desiring a dependable and charming machine that embodies the spirit of early 80s Japanese engineering, the XS 400 Special remains a compelling choice.

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Pros (Advantages)

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✅ Why buy this bike?

The Yamaha XS 400 Special 1981 is known for its reliable and durable engine, making it a great choice for daily commuting or long-distance rides.
It has a classic and timeless design that appeals to vintage motorcycle enthusiasts.
The bike offers a comfortable riding position, with a well-padded seat and ergonomically placed handlebars.
The XS 400 Special 1981 has good handling and maneuverability, making it easy to navigate through city streets or twisty roads.
This model is relatively easy to maintain and find parts for, thanks to its popularity and the availability of aftermarket support.

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Cons (Disadvantages)

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⚠️ Things to consider

Limited power output compared to modern motorcycles.
Outdated suspension technology leading to a less comfortable ride.
Older electrical system prone to issues and difficult to repair.
Limited aftermarket support for customization and upgrades.
Difficulty in finding replacement parts due to the age of the bike.

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Alternatives

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⚖️ Comparison & Competition

Honda CB400T Hawk
A reliable and lightweight motorcycle known for its smooth performance and comfortable ride, similar to the Yamaha XS 400 Special but with a distinct Honda design.
Suzuki GS400E
A versatile and easy-to-handle bike that offers a good balance of power and agility, making it a popular choice for riders looking for a dependable classic motorcycle.
Kawasaki KZ400
A classic and durable motorcycle with a timeless design, known for its strong engine performance and solid build quality, appealing to riders seeking a retro feel.
BMW R65
A unique and stylish motorcycle with a boxer engine layout, offering a smooth and responsive ride, ideal for those looking for a classic bike with a touch of sophistication.
Triumph Bonneville T140
A legendary British motorcycle known for its iconic design and powerful performance, appealing to riders who appreciate heritage and style combined with modern reliability

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License Class (EU)

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The Yamaha XS 400 Special produces 27 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 392cc class: 45-60 mpg (4.0-5.5 L/100km)

⛽ Tank: 14.00 litres (3.70 gallons)

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Insurance Class

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Insurance grouping for Yamaha XS 400 Special (392cc):

📋 Group 8-15 — mid-range

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Insurance Calculator (UK est.)

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Personalised premium estimate for the Yamaha XS 400 Special (UK rates):

💡 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 XS 400 Special based on comparable motorcycles:

AVERAGE

$2,615

📊 Category-based (18 motorcycles) · Approximate (USD)

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Buy New & Used

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Find new and used Yamaha XS 400 Special 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.

📋 Detailed Review

⚡ Key Specs

Displacement392.00 ccm (23.92 cubic inches)

Power27.00 HP (19.7 kW)) @ 7500 RPM

Torque32.3 Nm (3.3 kgf-m or 23.8 ft.lbs) @ 8000 RPM

Top Speed139.0 km/h (86.4 mph)

Fuel Cap.14.00 litres (3.70 gallons)

Seat Height780 mm (30.7 inches) If adjustable, lowest setting.

Gearbox6-speed

Yamaha XS 400 Special

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