ST7

2012 Hyosung ST7 Technical Analysis & Specification Breakdown

Positioned in Hyosung's custom - cruiser motorcycle lineup, the 2012 Hyosung ST7 utilizes a 678.2 cc (41.4 cu in) liquid-cooled v2, four-stroke layout. In factory specification, peak output is rated at 79 HP (57.7 kW) at 9,000 rpm while maximum torque reaches 67 Nm (49.4 lb-ft) at 7,250 rpm, transferring power to the rear wheel through a 5-speed gearbox and belt final drive. With a specific output of 116.5 HP per liter and a 1,750 rpm working window between peak torque (7,250 rpm) and peak power (9,000 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 ST7 measures 244 kg (538 lbs) dry, translating to a power-to-weight ratio of 0.32 HP/kg (3.09 kg per horsepower). Rider ergonomics and chassis geometry center around a 675 mm (26.6 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 1,690 mm (66.5 in) wheelbase engineered for planted straight-line stability. The 17.03-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Hyosung archive, this model family spans 5 indexed model years from 2012 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.