What category is the 1983 Triumph TR 6 Thunderbird?

The 1983 Triumph TR 6 Thunderbird has a Category of Allround.

What is the engine size of the 1983 Triumph TR 6 Thunderbird?

The 1983 Triumph TR 6 Thunderbird has a Capacity: of 648.00 ccm (39.54 cubic inches).

What type of engine does the 1983 Triumph TR 6 Thunderbird have?

The 1983 Triumph TR 6 Thunderbird has a Engine type of Twin.

What is the engine power of the 1983 Triumph TR 6 Thunderbird?

The 1983 Triumph TR 6 Thunderbird has a Power of 42.00.

Is the 1983 Triumph TR 6 Thunderbird air cooled or liquid cooled?

The 1983 Triumph TR 6 Thunderbird has a Cooling system of Air.

How many gears does the 1983 Triumph TR 6 Thunderbird have?

The 1983 Triumph TR 6 Thunderbird has a Gearbox of 5-speed.

How much does the 1983 Triumph TR 6 Thunderbird weigh?

The 1983 Triumph TR 6 Thunderbird has a Weight incl. oil, gas, etc of 190.0 kg (418.9 pounds).

What is the top speed of the 1983 Triumph TR 6 Thunderbird?

The 1983 Triumph TR 6 Thunderbird has a Top speed of 160.0 km/h (99.4 mph).

Triumph TR 6 Thunderbird - 1983 Specifications and Reviews

Name: 1983 Triumph TR 6 Thunderbird
Brand: Triumph

The 1983 Triumph TR 6 Thunderbird is a versatile 650cc air-cooled twin suited for riders seeking classic British styling with practical everyday performance. Known for its manageable power delivery and lightweight frame, it excels as an accessible all-rounder for commuting and casual touring. The model represents Triumph's enduring appeal among those valuing character and heritage over raw speed.

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1983

1982

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General information
Category	Allround
Year	1983
Model	Triumph TR 6 Thunderbird

Engine and Transmission Specifications
Transmission typefinal drive	Chain
Gearbox	5-speed
Cooling system	Air
Fuel control	OHV
Valves per cylinder	2
Bore x stroke	76.0 x 71.5 mm (3.0 x 2.8 inches)
Compression	9.0:1
Power	42.00
Stroke	4
Engine type	Twin
Capacity:	648.00 ccm (39.54 cubic inches)

Physical measures and capacities
Weight incl. oil, gas, etc	190.0 kg (418.9 pounds)
Triumph TR 6 Thunderbird dimensions and frame
Rear brakes	Expanding brake
Front brakes	Single disc
Rear tyre dimensions	4.00-18
Front tyre dimensions	3.25-19
Speed and acceleration
Top speed	160.0 km/h (99.4 mph)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Fuel capacity	18.50 litres (4.89 gallons)

Performance Profile & Rider Fit

42 hp

Peak Power

7.5s

0-60 mph

99.4 mph

Top Speed

Best For

Track20%

City55%

Cornering55%

Daily Riding50%

Touring45%

Passenger40%

Rider Profile

Best For	A classic parallel-twin roadster that suits riders comfortable with modest power delivery and old-school handling traits like drum-influenced braking feel and moderate chassis rigidity.
Purpose	Built as an all-round classic British twin for relaxed road riding rather than outright speed or long-distance touring comfort.
Rider Fit	Its light weight of around 190 kg and modest seat height make it manageable for most body sizes, though the lack of modern ergonomics means longer rides can be tiring.
Character	A charismatic, vintage-styled machine that rewards mechanical sympathy and an appreciation for classic motorcycling over raw performance.
Not Ideal For	Not suited to riders seeking modern power, long-haul touring comfort, or any serious off-road capability.

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