At the heart of the 2009 Yamaha TT-R125LW enduro - offroad motorcycle, Yamaha utilizes a 123.7 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 9.7 HP (7 kW) at 9,800 rpm while maximum torque reaches 9.9 Nm (7.3 lb-ft), transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 78.4 HP per liter, the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
On the scales, the TT-R125LW measures 84 kg (185 lbs) wet (curb), 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 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 1,270 mm (50 in) wheelbase engineered for quick, flickable steering geometry. The 6-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
78.4 HP/L
Power-to-Weight
0.12 HP/kg (8.66 kg/HP)
Standover Height
805 mm (31.7 in)
Engine
Displacement123.7 ccm (7.55 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power9.7 HP (7.0 kW)) @ 9800 RPM
Torque9.9 Nm (1.0 kgf-m or 7.3 ft.lbs)
Compression10.0:1
Bore x Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Fuel SystemCarburettor. Mikuni VM20/1
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionCDI (digital)
LubricationWet sump
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, multiple-disc coil spring
Chassis
Frame TypeDiamond shaped
Trail107 mm (4.2 inches)
Front SuspensionTelescopic forks
Front Travel180 mm (7.1 inches)
Rear SuspensionSwingarm (link suspension)
Rear Travel168 mm (6.6 inches)
Wheelbase1270 mm (50.0 inches)
Ground Clearance295 mm (11.6 inches)
Wheels & Brakes
Front Tyre70/0-M19
Rear Tyre90/0-M16
Front BrakesSingle disc
Front Brake Ø220 mm (8.7 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø110 mm (4.3 inches)
Dimensions & Weight
Weight incl.84.0 kg (185.2 pounds)
Seat Height805 mm (31.7 inches) If adjustable, lowest setting.
Overall Height1085 mm (42.7 inches)
Overall Length1885 mm (74.2 inches)
Overall Width795 mm (31.3 inches)
Fuel Capacity6.00 litres (1.59 US gallons)
Oil Capacity1.20 litres (1.27 US quarts)
Other
StarterElectric & kick
Color OptionsBlue
Notes
LW is Large Wheel. Optional electric start version called LW/E.
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.
