2021 Ksr TR 125 SM Technical Analysis & Specification Breakdown
Engineered by Ksr for the cross - motocross motorcycle segment, the 2021 Ksr TR 125 SM relies on a 124.4 cc (7.6 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 13.4 HP (9.8 kW) at 10,000 rpm, transferring power to the rear wheel through a automatic gearbox and belt final drive. With a specific output of 107.7 HP per liter, 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 TR 125 SM measures 140 kg (309 lbs) dry, translating to a power-to-weight ratio of 0.1 HP/kg (10.45 kg per horsepower).
Within MotoLibrary's Ksr archive, this model family spans 3 indexed model years from 2016 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
107.7 HP/L
Power-to-Weight
0.1 HP/kg (10.45 kg/HP)
Engine
Displacement124.4 ccm (7.59 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power13.4 HP (9.8 kW)) @ 10000 RPM
Fuel SystemCarburettor
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineCVT
Performance
Fuel Consumption3.50 litres/100 km (28.6 km/l or 67.21 mpg)
Greenhouse Gases81.2 CO2 g/km. (CO2 - Carbon dioxide emission)
Emission DetailsEuro 4
Chassis
Frame TypeSteel
Front SuspensionTelescopic fork
Rear SuspensionMonoshock
Wheels & Brakes
Front Tyre90/90-19
Rear Tyre110/90-17
Front BrakesSingle disc
Rear BrakesSingle disc
Dimensions & Weight
Dry Weight140.0 kg (308.6 pounds)
Power/Weight0.0958 HP/kg
Other
StarterElectric & kick
Color OptionsWhite, Yellow, Black
Notes
Sold in Algeria, Austria, Belgium, Cyprus, Germany, Greece, Italy, Latvia, Malta, Portugal, Switzerland.
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.
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.
