GT 550

1978 Suzuki GT 550 Technical Analysis & Specification Breakdown

Engineered by Suzuki for the classic motorcycle segment, the 1978 Suzuki GT 550 utilizes a 543 cc (33.1 cu in) air-cooled in-line three, two-stroke layout. In factory specification, peak output is rated at 48 HP (35 kW) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 88.4 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 GT 550 measures 190 kg (419 lbs) wet (curb), translating to a power-to-weight ratio of 0.25 HP/kg (3.96 kg per horsepower). The 15-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 178 km/h (111 mph).

Within MotoLibrary's Suzuki archive, this model family spans 6 indexed model years from 1973 to 1978, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.