RT 125 D

2007 Hyosung RT 125 D Technical Analysis & Specification Breakdown

Positioned in Hyosung's allround motorcycle lineup, the 2007 Hyosung RT 125 D features a 124.5 cc (7.6 cu in) oil & air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 13.4 HP (9.8 kW) at 10,000 rpm, transferring power to the rear wheel through shaft drive (cardan) final drive. With a specific output of 107.6 HP per liter, 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 RT 125 D measures 135 kg (298 lbs) wet (curb), translating to a power-to-weight ratio of 0.1 HP/kg (10.07 kg per horsepower). Rider ergonomics and chassis geometry center around a 790 mm (31.1 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,350 mm (53.1 in) wheelbase engineered for quick, flickable steering geometry. The 9.1-liter (2.4 US gal) fuel tank paired with a rated consumption of 4 L/100 km provides an estimated theoretical range of roughly 228 km (142 miles) between fill-ups, while factory top speed is listed at 105 km/h (65 mph).