Built around Honda's scooter motorcycle platform, the 2012 Honda SH125i Sporty utilizes a 125 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 13 HP (9.5 kW) at 9,000 rpm while maximum torque reaches 11.5 Nm (8.5 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 104 HP per liter and a 2,000 rpm working window between peak torque (7,000 rpm) and peak power (9,000 rpm), 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 SH125i Sporty measures 120 kg (265 lbs) dry, translating to a power-to-weight ratio of 0.11 HP/kg (9.23 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 1,335 mm (52.6 in) wheelbase engineered for quick, flickable steering geometry. The 7.5-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Honda archive, this model family spans 3 indexed model years from 2010 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
104 HP/L
Power-to-Weight
0.11 HP/kg (9.23 kg/HP)
Power Band Window
7,000–9,000 rpm
Standover Height
785 mm (30.9 in)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power13.0 HP (9.5 kW)) @ 9000 RPM
Torque11.5 Nm (1.2 kgf-m or 8.5 ft.lbs) @ 7000 RPM
Compression11.0:1
Bore x Stroke52.4 x 57.8 mm (2.1 x 2.3 inches)
Fuel SystemInjection. PGM-FI
IgnitionDigital transistorised with electronic advance
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
ClutchAutomatic centrifugal
DrivelineV-belt
Chassis
Rake27.0°
Trail85 mm (3.3 inches)
Front Suspension33mm telescopic fork
Front Travel89 mm (3.5 inches)
Rear SuspensionDual damper unit swingarm
Rear Travel83 mm (3.3 inches)
Wheelbase1335 mm (52.6 inches)
Ground Clearance149 mm (5.9 inches)
Wheels & Brakes
Front Tyre100/80-16
Rear Tyre120/80-16
Front BrakesSingle disc. Hydraulic disc with single-piston caliper, Comb Brake and sintered metal pads
Front Brake Ø240 mm (9.4 inches)
Rear BrakesSingle disc. Hydraulic disc with Combined three-piston caliper, drilled rotor and resin mould pads
Rear Brake Ø240 mm (9.4 inches)
WheelsU-section 5-spoke cast aluminium
Dimensions & Weight
Dry Weight120.0 kg (264.6 pounds)
Power/Weight0.1083 HP/kg
Seat Height785 mm (30.9 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.
