What category is the 1981 Yamaha XS 650?

The 1981 Yamaha XS 650 has a Category of Sport touring.

What is the engine size of the 1981 Yamaha XS 650?

The 1981 Yamaha XS 650 has a Capacity: of 654.00 ccm (39.91 cubic inches).

What type of engine does the 1981 Yamaha XS 650 have?

The 1981 Yamaha XS 650 has a Engine type of Twin.

What is the engine power of the 1981 Yamaha XS 650?

The 1981 Yamaha XS 650 has a Power of 50.00.

Is the 1981 Yamaha XS 650 air cooled or liquid cooled?

The 1981 Yamaha XS 650 has a Cooling system of Air.

How many gears does the 1981 Yamaha XS 650 have?

The 1981 Yamaha XS 650 has a Gearbox of 5-speed.

How much does the 1981 Yamaha XS 650 weigh?

The 1981 Yamaha XS 650 has a Weight incl. oil, gas, etc of 225.0 kg (496.0 pounds).

What is the top speed of the 1981 Yamaha XS 650?

The 1981 Yamaha XS 650 has a Top speed of 171.0 km/h (106.3 mph).

Yamaha XS 650 - 1981 Specifications and Reviews

Name: 1981 Yamaha XS 650
Brand: Yamaha

The 1981 Yamaha XS 650 is a lightweight sport-touring twin that appeals to riders seeking manageable power and nimble handling. Known for its reliable air-cooled engine and comfortable ergonomics, it excels as an accessible middleweight for both commuting and weekend adventures.

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1981

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General information
Category	Sport touring
Year	1981
Model	Yamaha XS 650

Engine and Transmission Specifications
Transmission typefinal drive	Chain
Gearbox	5-speed
Cooling system	Air
Fuel control	OHC
Valves per cylinder	2
Bore x stroke	75.0 x 74.0 mm (3.0 x 2.9 inches)
Compression	8.4:1
Power	50.00
Stroke	4
Engine type	Twin
Capacity:	654.00 ccm (39.91 cubic inches)
Physical measures and capacities
Weight incl. oil, gas, etc	225.0 kg (496.0 pounds)
Yamaha XS 650 dimensions and frame
Rear brakes	Expanding brake
Front brakes	Dual disc
Rear tyre dimensions	4.00-18
Front tyre dimensions	3.25-19

Speed and acceleration
Top speed	171.0 km/h (106.3 mph)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	15.00 litres (3.96 gallons)

Performance Profile & Rider Fit

50 hp

Peak Power

6.5s

0-60 mph

Best For

Track20%

City60%

Cornering45%

Daily Riding55%

Touring45%

Passenger40%

Rider Profile

Best For	Suits riders from intermediate level upward who enjoy a classic air-cooled twin with modest, manageable power delivery.
Purpose	A classic-styled custom cruiser best suited to relaxed street riding, weekend cruising, and light touring rather than outright performance.
Rider Fit	A mid-weight machine with a low, accessible seating position that most adult riders will find easy to manage at a standstill and in traffic.
Character	Delivers a torquey, vibration-rich parallel-twin character with old-school charm and straightforward, predictable handling.
Not Ideal For	Not the right choice for riders seeking modern sportbike speed, aggressive cornering ability, or any serious off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.