TW 125

2003 Yamaha TW 125 Technical Analysis & Specification Breakdown

Built around Yamaha's enduro - offroad motorcycle platform, the 2003 Yamaha TW 125 pairs a 124 cc (7.6 cu in) single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 11.8 HP (8.6 kW) at 9,000 rpm while maximum torque reaches 9.8 Nm (7.2 lb-ft) at 8,000 rpm. With a specific output of 95.2 HP per liter and a 1,000 rpm working window between peak torque (8,000 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 TW 125 measures 118 kg (260 lbs) dry, translating to a power-to-weight ratio of 0.1 HP/kg (10 kg per horsepower). Rider ergonomics and chassis geometry center around a 805 mm (31.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,280 mm (50.4 in) wheelbase engineered for quick, flickable steering geometry. The 7-liter (1.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Yamaha archive, this model family spans 5 indexed model years from 2000 to 2004, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.