GS 125 ES

1999 Suzuki GS 125 ES Technical Analysis & Specification Breakdown

Engineered by Suzuki for the allround motorcycle segment, the 1999 Suzuki GS 125 ES pairs a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 14 HP (10.2 kW) at 9,500 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 112.9 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 GS 125 ES measures 117 kg (258 lbs) dry, translating to a power-to-weight ratio of 0.12 HP/kg (8.36 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,270 mm (50 in) wheelbase engineered for quick, flickable steering geometry. The 11-liter (2.9 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 105 km/h (65 mph).

Within MotoLibrary's Suzuki archive, this model family spans 3 indexed model years from 1997 to 1999, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.