GSX-S125

2023 Suzuki GSX-S125 Technical Analysis & Specification Breakdown

Built around Suzuki's naked motorcycle platform, the 2023 Suzuki GSX-S125 pairs a 124 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 15 HP (10.9 kW) at 10,500 rpm while maximum torque reaches 11 Nm (8.1 lb-ft) at 8,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 121 HP per liter and a 2,000 rpm working window between peak torque (8,500 rpm) and peak power (10,500 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 GSX-S125 measures 135 kg (298 lbs) wet (curb), translating to a power-to-weight ratio of 0.11 HP/kg (9 kg per horsepower). Rider ergonomics and chassis geometry center around a 785 mm (30.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,300 mm (51.2 in) wheelbase engineered for quick, flickable steering geometry. The 11-liter (2.9 US gal) fuel tank paired with a rated consumption of 2.01 L/100 km provides an estimated theoretical range of roughly 547 km (340 miles) between fill-ups.

Within MotoLibrary's Suzuki archive, this model family spans 7 indexed model years from 2017 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.