Built around Kymco's naked motorcycle platform, the 2021 Kymco K-Pipe 125 pairs a 123.6 cc (7.5 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 6.7 HP (4.9 kW) at 7,000 rpm while maximum torque reaches 8.5 Nm (6.3 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. With a specific output of 54.2 HP per liter and a 500 rpm working window between peak torque (6,500 rpm) and peak power (7,000 rpm), the engine character is prioritizing low-RPM tractability, mechanical longevity and relaxed throttle response over peak redline numbers.
On the scales, the K-Pipe 125 measures 107 kg (236 lbs) dry, translating to a power-to-weight ratio of 0.06 HP/kg (15.97 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, combined with a 1,300 mm (51.2 in) wheelbase engineered for quick, flickable steering geometry. The 4.54-liter (1.2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Kymco archive, this model family spans 6 indexed model years from 2013 to 2022, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
54.2 HP/L
Power-to-Weight
0.06 HP/kg (15.97 kg/HP)
Power Band Window
6,500–7,000 rpm
Standover Height
780 mm (30.7 in)
Engine
Displacement123.6 ccm (7.54 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power6.7 HP (4.9 kW)) @ 7000 RPM
Torque8.5 Nm (0.9 kgf-m or 6.3 ft.lbs) @ 6500 RPM
Bore x Stroke54.0 x 54.0 mm (2.1 x 2.1 inches)
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
CoolingAir
Transmission
Gearbox4-speed
Final DriveChain (final drive)
Performance
Emission DetailsMeets current EPA standards. Models sold in California meet current CARB ˆstandards and may differ slightly due to emissions equipment.
Chassis
Frame TypeTubular Steel
Front SuspensionTelescopic Forks
Rear SuspensionMono Shock
Wheelbase1300 mm (51.2 inches)
Wheels & Brakes
Front Tyre2.75-17
Rear Tyre3.50-17
Front BrakesSingle disc. Twin-piston
Front Brake Ø276 mm (10.9 inches)
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight107.0 kg (235.9 pounds)
Power/Weight0.0626 HP/kg
Seat Height780 mm (30.7 inches) If adjustable, lowest setting.
Overall Height1059 mm (41.7 inches)
Overall Length1951 mm (76.8 inches)
Overall Width749 mm (29.5 inches)
Fuel Capacity4.54 litres (1.20 US gallons)
Other
StarterElectric & kick
Color OptionsRed/Black, Red/Green
Warranty2 - Year Factory Warranty, extended coverage available with KYMCO extended protection plan.
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.
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.
