Engineered by Yamaha for the enduro - offroad motorcycle segment, the 2004 Yamaha TW 125 utilizes a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 11.8 HP (8.6 kW) at 12,000 rpm while maximum torque reaches 9.7 Nm (7.2 lb-ft) at 6,500 rpm, transferring power to the rear wheel through chain final drive. With a specific output of 95.2 HP per liter and a 5,500 rpm working window between peak torque (6,500 rpm) and peak power (12,000 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 TW 125 measures 118 kg (260 lbs) dry, translating to a power-to-weight ratio of 0.1 HP/kg (10 kg per horsepower). Rider ergonomics and chassis geometry center around a 805 mm (31.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,350 mm (53.1 in) wheelbase engineered for quick, flickable steering geometry.
Within MotoLibrary's Yamaha archive, this model family spans 5 indexed model years from 2000 to 2004, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
95.2 HP/L
Power-to-Weight
0.1 HP/kg (10 kg/HP)
Power Band Window
6,500–12,000 rpm
Standover Height
805 mm (31.7 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power11.8 HP (8.6 kW)) @ 12000 RPM
Torque9.7 Nm (1.0 kgf-m or 7.2 ft.lbs) @ 6500 RPM
Compression10.0:1
Bore x Stroke57.0 x 48.8 mm (2.2 x 1.9 inches)
Fuel ControlSingle Overhead Cams (SOHC)
CoolingAir
Transmission
Final DriveChain (final drive)
Chassis
Front SuspensionTelescopic forks
Front Travel150 mm (5.9 inches)
Rear SuspensionSwingarm Monocross
Rear Travel150 mm (5.9 inches)
Wheelbase1350 mm (53.1 inches)
Ground Clearance260 mm (10.2 inches)
Wheels & Brakes
Front Tyre130/80-18
Rear Tyre180/80-14
Front BrakesSingle disc
Front Brake Ø220 mm (8.7 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø130 mm (5.1 inches)
Dimensions & Weight
Dry Weight118.0 kg (260.1 pounds)
Power/Weight0.1000 HP/kg
Seat Height805 mm (31.7 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.
