2005 Aprilia Pegaso 650 i.e. Technical Analysis & Specification Breakdown
At the heart of the 2005 Aprilia Pegaso 650 i.e. enduro - offroad motorcycle, Aprilia utilizes a 651.8 cc (39.8 cu in) liquid-cooled single cylinder, four-stroke layout. 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 6,250 rpm, transferring power to the rear wheel through a 1-speed gearbox and chain final drive. With a specific output of 72.1 HP per liter and a 250 rpm working window between peak torque (6,250 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 25-liter (6.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Aprilia archive, this model family spans 3 indexed model years from 2001 to 2005, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
72.1 HP/L
Power Band Window
6,250–6,500 rpm
Standover Height
817 mm (32.2 in)
Engine
Displacement651.8 ccm (39.77 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power47.0 HP (34.3 kW)) @ 6500 RPM
Torque58.0 Nm (5.9 kgf-m or 42.8 ft.lbs) @ 6250 RPM
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
