Built around Piaggio's scooter motorcycle platform, the 2006 Piaggio Liberty 125 4 Stroke relies on a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 10 HP (7.3 kW) at 8,000 rpm while maximum torque reaches 10.2 Nm (7.5 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a automatic gearbox. With a specific output of 80.6 HP per liter and a 1,500 rpm working window between peak torque (6,500 rpm) and peak power (8,000 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 Liberty 125 4 Stroke measures 99 kg (218 lbs) dry, translating to a power-to-weight ratio of 0.1 HP/kg (9.9 kg per horsepower). Rider ergonomics and chassis geometry center around a 775 mm (30.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,335 mm (52.6 in) wheelbase engineered for quick, flickable steering geometry. The 6-liter (1.6 US gal) fuel tank paired with a rated consumption of 3.57 L/100 km provides an estimated theoretical range of roughly 168 km (104 miles) between fill-ups.
Within MotoLibrary's Piaggio archive, this model family spans 3 indexed model years from 2005 to 2007, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
80.6 HP/L
Power-to-Weight
0.1 HP/kg (9.9 kg/HP)
Power Band Window
6,500–8,000 rpm
Theoretical Range
~168 km (104 mi)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power10.0 HP (7.3 kW)) @ 8000 RPM
Torque10.2 Nm (1.0 kgf-m or 7.5 ft.lbs) @ 6500 RPM
Compression10.6:1
Bore x Stroke57.0 x 48.6 mm (2.2 x 1.9 inches)
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionInductive
LubricationWet sump
CoolingAir
Transmission
GearboxAutomatic
ClutchDry automatic centrifugal type
Performance
Fuel Consumption3.57 litres/100 km (28.0 km/l or 65.89 mpg)
Greenhouse Gases82.8 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeSteel tubes
Front SuspensionØ 140 32 telehydraulic fork, 76 mm travel
Rear SuspensionHydraulic monoshock, 4 position spring preload, 85.5 mm travel
Wheelbase1335 mm (52.6 inches)
Wheels & Brakes
Front Tyre90/80-16
Rear Tyre110/80-14
Front BrakesSingle disc
Front Brake Ø220 mm (8.7 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø140 mm (5.5 inches)
Dimensions & Weight
Dry Weight99.0 kg (218.3 pounds)
Power/Weight0.1010 HP/kg
Seat Height775 mm (30.5 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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
