Built around Hartford's allround motorcycle platform, the 2013 Hartford HD-125S features a 124 cc (7.6 cu in) single cylinder, four-stroke configuration. In factory specification, peak output is rated at 12.7 HP (9.3 kW) at 8,200 rpm while maximum torque reaches 6.9 Nm (5.1 lb-ft) at 7,500 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 102.4 HP per liter and a 700 rpm working window between peak torque (7,500 rpm) and peak power (8,200 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 HD-125S measures 110 kg (243 lbs) dry, translating to a power-to-weight ratio of 0.12 HP/kg (8.66 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, combined with a 1,280 mm (50.4 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's Hartford archive, this model family spans 3 indexed model years from 2007 to 2014, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
102.4 HP/L
Power-to-Weight
0.12 HP/kg (8.66 kg/HP)
Power Band Window
7,500–8,200 rpm
Standover Height
780 mm (30.7 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power12.7 HP (9.3 kW)) @ 8200 RPM
Torque6.9 Nm (0.7 kgf-m or 5.1 ft.lbs) @ 7500 RPM
Bore x Stroke56.5 x 49.5 mm (2.2 x 1.9 inches)
Fuel SystemCarburettor
Fuel ControlOverhead Valves (OHV)
IgnitionCDI
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic fork
Rear SuspensionDual shocks
Wheelbase1280 mm (50.4 inches)
Wheels & Brakes
Front Tyre2.75-18
Rear Tyre3.50-16
Front BrakesSingle disc
Front Brake Ø125 mm (4.9 inches)
Rear BrakesSingle disc
Rear Brake Ø125 mm (4.9 inches)
Dimensions & Weight
Dry Weight110.0 kg (242.5 pounds)
Power/Weight0.1158 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.
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.
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.
