Positioned in Piaggio's scooter motorcycle lineup, the 2011 Piaggio Fly 50 features a 49.9 cc (3 cu in) air-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 11.4 HP (8.3 kW) at 7,750 rpm while maximum torque reaches 3.5 Nm (2.6 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. Internal engine geometry specifies a bore and stroke of 39.0 x 41.8 mm (1.5 x 1.6 inches).
On the scales, the Fly 50 measures 107 kg (236 lbs) wet (curb), translating to a power-to-weight ratio of 0.11 HP/kg (9.39 kg per horsepower). Rider ergonomics and chassis geometry center around a 785 mm (30.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,331 mm (52.4 in) wheelbase engineered for quick, flickable steering geometry. The 7.1-liter (1.9 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Piaggio archive, this model family spans 3 indexed model years from 2008 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Power-to-Weight
0.11 HP/kg (9.39 kg/HP)
Power Band Window
6,500–7,750 rpm
Standover Height
785 mm (30.9 in)
Engine
Displacement49.9 ccm (3.04 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsPiaggio HI-PER4 engine
Power11.4 HP (8.3 kW)) @ 7750 RPM
Torque3.5 Nm (0.4 kgf-m or 2.6 ft.lbs) @ 6500 RPM
Bore x Stroke39.0 x 41.8 mm (1.5 x 1.6 inches)
Valves/Cylinder2
Fuel ControlSingle Overhead Cams (SOHC)
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
Performance
ExhaustEuro 2
Chassis
Frame TypeTube type
Front SuspensionTelescopic fork
Rear SuspensionHydraulic shock absorber
Wheelbase1331 mm (52.4 inches)
Wheels & Brakes
Front Tyre120/70-12
Rear Tyre120/70-12
Front BrakesSingle disc
Front Brake Ø200 mm (7.9 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø140 mm (5.5 inches)
Dimensions & Weight
Dry Weight100.0 kg (220.5 pounds)
Weight incl.107.0 kg (235.9 pounds)
Power/Weight0.1140 HP/kg
Seat Height785 mm (30.9 inches) If adjustable, lowest setting.
Fuel Capacity7.10 litres (1.88 US gallons)
Other
StarterElectric & kick
Color OptionsBlue, Silver, Black, White
Carrying CapacityGlove compartment and space for a helmet under the seat.
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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
