GP 125

1978 Suzuki GP 125 Technical Analysis & Specification Breakdown

Positioned in Suzuki's naked motorcycle lineup, the 1978 Suzuki GP 125 utilizes a 123 cc (7.5 cu in) air-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 10 HP (7.3 kW) at 8,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 81.3 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 GP 125 measures 103 kg (227 lbs) wet (curb), translating to a power-to-weight ratio of 0.1 HP/kg (10.3 kg per horsepower). The 10-liter (2.6 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 117 km/h (73 mph).

Within MotoLibrary's Suzuki archive, this model family spans 3 indexed model years from 1978 to 1981, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.