RS 125

2004 Aprilia RS 125 Technical Analysis & Specification Breakdown

Built around Aprilia's sport motorcycle platform, the 2004 Aprilia RS 125 utilizes a 125 cc (7.6 cu in) liquid-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 14.8 HP (10.8 kW), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 118.4 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.

Within MotoLibrary's Aprilia archive, this model family spans 21 indexed model years from 1997 to 2025, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.