GF 125

2001 Hyosung GF 125 Technical Analysis & Specification Breakdown

At the heart of the 2001 Hyosung GF 125 naked motorcycle, Hyosung pairs a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 13.7 HP (10 kW) at 8,600 rpm while maximum torque reaches 11 Nm (8.1 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 109.6 HP per liter and a 1,100 rpm working window between peak torque (7,500 rpm) and peak power (8,600 rpm), the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.

On the scales, the GF 125 measures 128 kg (282 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9.34 kg per horsepower). Rider ergonomics and chassis geometry center around a 788 mm (31 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,290 mm (50.8 in) wheelbase engineered for quick, flickable steering geometry. The 13.7-liter (3.6 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 103 km/h (64 mph).

Within MotoLibrary's Hyosung archive, this model family spans 4 indexed model years from 2000 to 2005, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.