Positioned in AlphaSports's naked motorcycle lineup, the 2008 AlphaSports Alpha 250 Naked utilizes a 249 cc (15.2 cu in) oil & air-cooled v2, four-stroke layout. In factory specification, peak output is rated at 28 HP (20.4 kW), transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 112.4 HP per liter, the engine character is reflecting a performance-oriented street tune that balances strong mid-range pull with an energetic top-end rush.
On the scales, the Alpha 250 Naked measures 139.3 kg (307 lbs) dry, translating to a power-to-weight ratio of 0.2 HP/kg (4.98 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. The 17.03-liter (4.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
112.4 HP/L
Power-to-Weight
0.2 HP/kg (4.98 kg/HP)
Standover Height
780 mm (30.7 in)
Engine
Displacement249.0 ccm (15.19 cubic inches)
Engine TypeV2, four-stroke
Engine DetailsV2, four-stroke
Power28.0 HP (20.4 kW))
Valves/Cylinder4
Fuel SystemCarburettor. 2 x Mikuni
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
LubricationForced wet sump
CoolingOil & air
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet multi-plate
Chassis
Frame TypeDouble-cradle
Rake25.5°
Front SuspensionTelescopic, Oil Damped
Rear SuspensionSwing Arm
Wheels & Brakes
Front Tyre110/70-17
Rear Tyre150/70-17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight139.3 kg (307.0 pounds)
Power/Weight0.2011 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.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
