At the heart of the 2021 Keeway TX 125 Supermoto E4 super motard motorcycle, Keeway utilizes a 124.8 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 11.5 HP (8.4 kW) at 9,000 rpm while maximum torque reaches 10 Nm (7.4 lb-ft) at 7,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 92.1 HP per liter and a 2,000 rpm working window between peak torque (7,000 rpm) and peak power (9,000 rpm), the engine character is indicating a tractable, stress-free state of tune focused on everyday usability and broad torque delivery.
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 1,340 mm (52.8 in) wheelbase engineered for quick, flickable steering geometry. The 11.2-liter (3 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Keeway archive, this model family spans 2 indexed model years from 2019 to 2021, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
92.1 HP/L
Power Band Window
7,000–9,000 rpm
Standover Height
860 mm (33.9 in)
Engine
Displacement124.8 ccm (7.62 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power11.5 HP (8.4 kW)) @ 9000 RPM
Torque10.0 Nm (1.0 kgf-m or 7.4 ft.lbs) @ 7000 RPM
Compression9.6:1
Bore x Stroke54.0 x 54.5 mm (2.1 x 2.1 inches)
Valves/Cylinder4
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
IgnitionTLI
LubricationPressure Splash
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet, Multiplate
Chassis
Frame TypeBassinet
Front SuspensionTelescopic fork
Front Travel150 mm (5.9 inches)
Rear SuspensionTelescopic coil sprong oil damped
Rear Travel51 mm (2.0 inches)
Wheelbase1340 mm (52.8 inches)
Ground Clearance240 mm (9.4 inches)
Wheels & Brakes
Front Tyre100/80-17
Rear Tyre130/70-17
Front BrakesSingle disc
Rear BrakesSingle disc
WheelsCast alloy
Dimensions & Weight
Seat Height860 mm (33.9 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.
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.
