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MotoLibrary Score
35/100Commuter
Power/Weight
0.08 hp/kg
Top Speed
91 km/h
Torque
6 Nm
Engine
72 ccm
Technical Overview
1975 Yamaha GT80 B Technical Analysis & Specification Breakdown
Built around Yamaha's enduro - offroad motorcycle platform, the 1975 Yamaha GT80 B pairs a 72 cc (4.4 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 4.9 HP (3.6 kW) while maximum torque reaches 6.1 Nm (4.5 lb-ft) at 7,200 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 68.1 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the GT80 B measures 60.3 kg (133 lbs) wet (curb). The 4.92-liter (1.3 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 91 km/h (57 mph).
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
