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MotoLibrary Score
36/100Commuter
Power/Weight
0.09 hp/kg
Top Speed
95 km/h
Torque
12 Nm
Engine
149 ccm
Technical Overview
2012 Lifan LF150-SJ II Technical Analysis & Specification Breakdown
Positioned in Lifan's sport motorcycle lineup, the 2012 Lifan LF150-SJ II utilizes a 149 cc (9.1 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 11 HP (8 kW) at 7,000 rpm while maximum torque reaches 11.5 Nm (8.5 lb-ft) at 5,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 73.8 HP per liter and a 1,500 rpm working window between peak torque (5,500 rpm) and peak power (7,000 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 LF150-SJ II measures 117 kg (258 lbs) dry, translating to a power-to-weight ratio of 0.09 HP/kg (10.64 kg per horsepower). Rider ergonomics and chassis geometry center around a 770 mm (30.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,285 mm (50.6 in) wheelbase engineered for quick, flickable steering geometry. The 13-liter (3.4 US gal) fuel tank paired with a rated consumption of 2.2 L/100 km provides an estimated theoretical range of roughly 591 km (367 miles) between fill-ups, while factory top speed is listed at 95 km/h (59 mph).
Specific Output
73.8 HP/L
Power-to-Weight
0.09 HP/kg (10.64 kg/HP)
Power Band Window
5,500–7,000 rpm
Theoretical Range
~591 km (367 mi)
Engine
Displacement149.0 ccm (9.09 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power11.0 HP (8.0 kW)) @ 7000 RPM
Torque11.5 Nm (1.2 kgf-m or 8.5 ft.lbs) @ 5500 RPM
Compression9.1:1
Bore x Stroke57.3 x 57.3 mm (2.3 x 2.3 inches)
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Performance
Top Speed95.0 km/h (59.0 mph)
Fuel Consumption2.20 litres/100 km (45.5 km/l or 106.92 mpg)
Greenhouse Gases51.0 CO2 g/km. (CO2 - Carbon dioxide emission)
Chassis
Frame TypeSteel
Front SuspensionTelescopic hydraulic
Rear SuspensionDual shocks
Wheelbase1285 mm (50.6 inches)
Wheels & Brakes
Front BrakesSingle disc. Optional drum
Rear BrakesExpanding brake (drum brake)
WheelsBlack, five spoke aluminium alloy wheels.
Dimensions & Weight
Dry Weight117.0 kg (257.9 pounds)
Power/Weight0.0940 HP/kg
Seat Height770 mm (30.3 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.
