What category is the 1984 Yamaha XS 400 DOHC (reduced Effect)?

The 1984 Yamaha XS 400 DOHC (reduced Effect) has a Category of Touring.

What is the engine size of the 1984 Yamaha XS 400 DOHC (reduced Effect)?

The 1984 Yamaha XS 400 DOHC (reduced Effect) has a Capacity: of 399.00 ccm (24.35 cubic inches).

What type of engine does the 1984 Yamaha XS 400 DOHC (reduced Effect) have?

The 1984 Yamaha XS 400 DOHC (reduced Effect) has a Engine type of Twin, four-stroke.

What is the engine power of the 1984 Yamaha XS 400 DOHC (reduced Effect)?

The 1984 Yamaha XS 400 DOHC (reduced Effect) has a Power of 27.00.

What is the top speed of the 1984 Yamaha XS 400 DOHC (reduced Effect)?

The 1984 Yamaha XS 400 DOHC (reduced Effect) has a Top speed of 143.0 km/h (88.9 mph).

Is the 1984 Yamaha XS 400 DOHC (reduced Effect) air cooled or liquid cooled?

The 1984 Yamaha XS 400 DOHC (reduced Effect) has a Cooling system of Air.

How many gears does the 1984 Yamaha XS 400 DOHC (reduced Effect) have?

The 1984 Yamaha XS 400 DOHC (reduced Effect) has a Gearbox of 6-speed.

How much does the 1984 Yamaha XS 400 DOHC (reduced Effect) weigh?

The 1984 Yamaha XS 400 DOHC (reduced Effect) has a Weight incl. oil, gas, etc of 187.0 kg (412.3 pounds).

Yamaha XS 400 DOHC (reduced Effect) - 1984 Specifications and Reviews

Name: 1984 Yamaha XS 400 DOHC (reduced Effect)
Brand: Yamaha

The 1984 Yamaha XS 400 DOHC is an accessible middleweight twin ideal for novice and budget-conscious riders seeking practical commuting and light touring capability. Its refined 399cc air-cooled engine delivers steady, manageable power with excellent fuel efficiency, while the stable chassis and comfortable ergonomics make it a reliable daily workhorse. Known for its durability and low maintenance costs, this model represents classic Japanese engineering at an entry-level price point.

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1984

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General information
Category	Touring
Year	1984
Model	Yamaha XS 400 DOHC (reduced effect)

Engine and Transmission Specifications
Transmission type,final drive	Chain
Gearbox	6-speed
Cooling system	Air
Fuel control	DOHC
Valves per cylinder	2
Bore x stroke	69.0 x 53.4 mm (2.7 x 2.1 inches)
Compression	9.7:1
Top speed	143.0 km/h (88.9 mph)
Power	27.00
Engine type	Twin, four-stroke
Capacity:	399.00 ccm (24.35 cubic inches)
Brakes, suspension, Frame and wheels
Rear brakes	Expanding brake
Front brakes	Single disc
Rear tyre dimensions	4.10-18
Front tyre dimensions	3.00-18
Physical measures and capacities
Fuel capacity	18.00 litres (4.76 gallons)
Weight incl. oil, gas, etc	187.0 kg (412.3 pounds)

Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

27 hp

Peak Power

9.5s

0-60 mph

88.9 mph

Top Speed

Best For

Track20%

City65%

Cornering50%

Daily Riding65%

Touring50%

Passenger40%

Rider Profile

Best For	This bike suits beginner to intermediate riders who want a light, forgiving machine to build confidence on.
Purpose	It's best suited to relaxed commuting and light weekend rides rather than serious speed or distance touring.
Rider Fit	Its low weight and modest seat height make it manageable for riders of smaller stature or less upper body strength.
Character	The XS 400 has an approachable, unintimidating character typical of classic Japanese twins from its era.
Not Ideal For	It's not for riders seeking strong highway overtaking power, off-road capability, or long-haul touring comfort with a passenger.

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