Built around Kymco's sport motorcycle platform, the 2017 Kymco CK1 125 utilizes a 125 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. In factory specification, peak output is rated at 10.3 HP (7.5 kW) at 8,000 rpm, transferring power to the rear wheel through a 5-speed gearbox and chain final drive. With a specific output of 82.4 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 CK1 125 measures 122 kg (269 lbs) dry, translating to a power-to-weight ratio of 0.08 HP/kg (11.84 kg per horsepower). Rider ergonomics and chassis geometry center around a 780 mm (30.7 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 13.5-liter (3.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kymco archive, this model family spans 2 indexed model years from 2016 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
82.4 HP/L
Power-to-Weight
0.08 HP/kg (11.84 kg/HP)
Standover Height
780 mm (30.7 in)
Engine
Displacement125.0 ccm (7.63 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power10.3 HP (7.5 kW)) @ 8000 RPM
Fuel SystemCarburettor
Fuel ControlOverhead Cams (OHC)
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
Chassis
Frame TypeSteel tubular structure
Front SuspensionTelescopic fork
Rear SuspensionSwing arm
Wheels & Brakes
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight122.0 kg (269.0 pounds)
Power/Weight0.0847 HP/kg
Seat Height780 mm (30.7 inches) If adjustable, lowest setting.
Overall Length2035 mm (80.1 inches)
Overall Width740 mm (29.1 inches)
Fuel Capacity13.50 litres (3.57 US gallons)
Other
StarterElectric & kick
Color OptionsGreen
Notes
Kymco is made by Kwang Yang Motor Company, Taiwan.
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.
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.
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.
