Built around Aprilia's scooter motorcycle platform, the 2007 Aprilia Atlantic 400 Sprint pairs a 399 cc (24.4 cu in) liquid-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 34 HP (24.8 kW) at 7,500 rpm while maximum torque reaches 37 Nm (27.3 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 85.2 HP per liter and a 2,000 rpm working window between peak torque (5,500 rpm) and peak power (7,500 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the Atlantic 400 Sprint measures 199 kg (439 lbs) dry, translating to a power-to-weight ratio of 0.17 HP/kg (5.85 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,550 mm (61 in) wheelbase engineered for planted straight-line stability. The 15-liter (4 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 2007 to 2009, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
85.2 HP/L
Power-to-Weight
0.17 HP/kg (5.85 kg/HP)
Power Band Window
5,500–7,500 rpm
Engine
Displacement399.0 ccm (24.35 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power34.0 HP (24.8 kW)) @ 7500 RPM
Torque37.0 Nm (3.8 kgf-m or 27.3 ft.lbs) @ 5500 RPM
Compression10.5:1
Bore x Stroke86.0 x 69.0 mm (3.4 x 2.7 inches)
Valves/Cylinder4
Fuel SystemInjection. Electronic fuel injection.
Fuel ControlSingle Overhead Cams (SOHC)
LubricationWet sump. Forced lubrication with mechanical oil pump
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchAutomatic centrifugal dry clutch.
Chassis
Frame TypeHigh-strength tubular steel frame with closed double cradle.
Front Suspension35 mm hydraulic fork.
Front Travel150 mm (5.9 inches)
Rear SuspensionEngine acting as swingarm. Two gas filled shock absorbers with 5 position spring preload adjustment.
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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
