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MotoLibrary Score
44/100Commuter
Power/Weight
0.25 hp/kg
Torque
55 Nm
Engine
550 ccm
Technical Overview
2019 Kymco AK 550 55th Technical Analysis & Specification Breakdown
At the heart of the 2019 Kymco AK 550 55th scooter motorcycle, Kymco utilizes a 550 cc (33.6 cu in) liquid-cooled twin, four-stroke layout. In factory specification, peak output is rated at 53 HP (38.7 kW) at 7,500 rpm while maximum torque reaches 55 Nm (40.6 lb-ft) at 5,750 rpm. With a specific output of 96.4 HP per liter and a 1,750 rpm working window between peak torque (5,750 rpm) and peak power (7,500 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 AK 550 55th measures 210 kg (463 lbs) dry, translating to a power-to-weight ratio of 0.25 HP/kg (3.96 kg per horsepower). Rider ergonomics and chassis geometry center around a 785 mm (30.9 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance. The 14.5-liter (3.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Specific Output
96.4 HP/L
Power-to-Weight
0.25 HP/kg (3.96 kg/HP)
Power Band Window
5,750–7,500 rpm
Standover Height
785 mm (30.9 in)
Engine
Displacement550.0 ccm (33.56 cubic inches)
Engine TypeTwin, four-stroke
Power53.0 HP (38.7 kW)) @ 7500 RPM
Torque55.0 Nm (5.6 kgf-m or 40.6 ft.lbs) @ 5750 RPM
Fuel SystemInjection
CoolingLiquid
Performance
Emission DetailsEuro 4
Chassis
Front SuspensionUpside down telescopic fork
Rear SuspensionUnit Swing
Wheels & Brakes
Front Tyre120/70-R15
Rear Tyre150/60-R15
Front BrakesDouble disc
Rear BrakesSingle disc
WheelsAluminium alloy
Dimensions & Weight
Dry Weight210.0 kg (463.0 pounds)
Power/Weight0.2522 HP/kg
Seat Height785 mm (30.9 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.
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.
