Positioned in Aprilia's scooter motorcycle lineup, the 2008 Aprilia Atlantic 400 Sprint features a 390 cc (23.8 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 33.5 HP (24.5 kW) at 7,500 rpm while maximum torque reaches 37 Nm (27.3 lb-ft) at 5,500 rpm. With a specific output of 85.9 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 (5.94 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 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 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
85.9 HP/L
Power-to-Weight
0.17 HP/kg (5.94 kg/HP)
Power Band Window
5,500–7,500 rpm
Standover Height
780 mm (30.7 in)
Engine
Displacement390.0 ccm (23.80 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power33.5 HP (24.5 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)
IgnitionElectronic CDI with automatic advance.
LubricationWet sump. Forced lubrication with mechanical oil pump.
CoolingLiquid
Transmission
ClutchAutomatic centrifugal dry clutch.
Chassis
Frame TypeHigh-strength tubular steel frame with closed double cradle.
Front Suspension35 mm hydraulic fork. Wheel travel 105 mm.
Rear SuspensionEngine acting as swingarm. Two gas filled shock absorbers with 5 position spring preload adjustment. Wheel travel 90 mm.
Wheelbase1550 mm (61.0 inches)
Wheels & Brakes
Front Tyre120/70-14
Rear Tyre140/60-14
Front BrakesSingle disc
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Ø190 mm (7.5 inches)
Dimensions & Weight
Dry Weight199.0 kg (438.7 pounds)
Power/Weight0.1684 HP/kg
Seat Height780 mm (30.7 inches) If adjustable, lowest setting.
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.
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.
