At the heart of the 2006 Aprilia Pegaso 650 Trail trial motorcycle, Aprilia pairs a 659 cc (40.2 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 50 HP (36.5 kW) at 6,250 rpm while maximum torque reaches 61.3 Nm (45.2 lb-ft) at 5,250 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 75.9 HP per liter and a 1,000 rpm working window between peak torque (5,250 rpm) and peak power (6,250 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 820 mm (32.3 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,479 mm (58.2 in) wheelbase engineered for balanced agility and highway composure. The 16-liter (4.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Aprilia archive, this model family spans 7 indexed model years from 2006 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
75.9 HP/L
Power Band Window
5,250–6,250 rpm
Standover Height
820 mm (32.3 in)
Engine
Displacement659.0 ccm (40.21 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power50.0 HP (36.5 kW)) @ 6250 RPM
Torque61.3 Nm (6.3 kgf-m or 45.2 ft.lbs) @ 5250 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.
