Built around Yamaha's enduro - offroad motorcycle platform, the 2012 Yamaha WR125R pairs a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 14.8 HP (10.8 kW) at 9,000 rpm while maximum torque reaches 12.2 Nm (9 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 119.4 HP per liter and a 3,500 rpm working window between peak torque (5,500 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 WR125R measures 120 kg (265 lbs) wet (curb), translating to a power-to-weight ratio of 0.12 HP/kg (8.11 kg per horsepower). Rider ergonomics and chassis geometry center around a 860 mm (33.9 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,335 mm (52.6 in) wheelbase engineered for quick, flickable steering geometry. The 9-liter (2.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Yamaha archive, this model family spans 8 indexed model years from 2009 to 2026, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
119.4 HP/L
Power-to-Weight
0.12 HP/kg (8.11 kg/HP)
Power Band Window
5,500–9,000 rpm
Standover Height
860 mm (33.9 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsForward-inclined single cylinder
Power14.8 HP (10.8 kW)) @ 9000 RPM
Torque12.2 Nm (1.2 kgf-m or 9.0 ft.lbs) @ 5500 RPM
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.
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.
