At the heart of the 2004 Aprilia Atlantic 500 scooter motorcycle, Aprilia utilizes a 459 cc (28 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 39 HP (28.5 kW) at 7,250 rpm while maximum torque reaches 40 Nm (29.5 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and belt final drive. With a specific output of 85 HP per liter and a 1,750 rpm working window between peak torque (5,500 rpm) and peak power (7,250 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 770 mm (30.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,550 mm (61 in) wheelbase engineered for planted straight-line stability. The 14-liter (3.7 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 2004 to 2005, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
85 HP/L
Power Band Window
5,500–7,250 rpm
Standover Height
770 mm (30.3 in)
Engine
Displacement459.0 ccm (28.01 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power39.0 HP (28.5 kW)) @ 7250 RPM
Torque40.0 Nm (4.1 kgf-m or 29.5 ft.lbs) @ 5500 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.
