Pegaso I.E. 650

2004 Aprilia Pegaso I.E. 650 Technical Analysis & Specification Breakdown

Engineered by Aprilia for the enduro - offroad motorcycle segment, the 2004 Aprilia Pegaso I.E. 650 relies on a 651.8 cc (39.8 cu in) liquid-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 47 HP (34.3 kW) at 6,500 rpm while maximum torque reaches 58 Nm (42.8 lb-ft) at 4,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 72.1 HP per liter and a 2,000 rpm working window between peak torque (4,500 rpm) and peak power (6,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.

Rider ergonomics and chassis geometry center around a 817 mm (32.2 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,480 mm (58.3 in) wheelbase engineered for balanced agility and highway composure. The 21-liter (5.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Within MotoLibrary's Aprilia archive, this model family spans 2 indexed model years from 2003 to 2004, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.