Engineered by Keeway for the sport motorcycle segment, the 2021 Keeway RKR 125 features a 124.1 cc (7.6 cu in) liquid-cooled single cylinder, four-stroke configuration. In factory specification, peak output is rated at 12.6 HP (9.2 kW) at 9,500 rpm while maximum torque reaches 10 Nm (7.4 lb-ft) at 8,500 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 101.5 HP per liter and a 1,000 rpm working window between peak torque (8,500 rpm) and peak power (9,500 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 RKR 125 measures 153 kg (337 lbs) dry, translating to a power-to-weight ratio of 0.08 HP/kg (12.14 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,310 mm (51.6 in) wheelbase engineered for quick, flickable steering geometry. The 15-liter (4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Keeway archive, this model family spans 3 indexed model years from 2018 to 2022, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
101.5 HP/L
Power-to-Weight
0.08 HP/kg (12.14 kg/HP)
Power Band Window
8,500–9,500 rpm
Engine
Displacement124.1 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power12.6 HP (9.2 kW)) @ 9500 RPM
Torque10.0 Nm (1.0 kgf-m or 7.4 ft.lbs) @ 8500 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.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
