Kymco Ak 550I - 2025 Specifications and Reviews

The 2025 Kymco AK 550i is a maxi-scooter built for riders seeking practical commuting with genuine performance. Its 550cc twin-cylinder engine delivers 53 horsepower, making it equally comfortable tackling highway speeds or city traffic. Known for combining sporty handling with functional storage, it appeals to practical riders who refuse to sacrifice excitement.

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General information

Color OptionsMatte Metallic Silver, Deep Blue.
PriceUS$ 10399. MSRP depends on country, taxes, accessories, etc.
CategoryScooter
ModelKymco AK 550i

Engine and Transmission Specifications

StartingElectric
Final DriveBelt (final drive)
GearboxAutomatic
Cooling SystemLiquid
IgnitionElectric
Fuel ControlDouble Overhead Cams/Twin Cam (DOHC)
InductionInjection
Valves Per Cylinder4
Bore x Stroke69.0 x 73.6 mm (2.7 x 2.9 inches)
Compression Ratio11.0:1
Max Torque55.1 Nm (5.6 kgf-m or 40.6 ft.lbs) @ 5750 RPM
Max Power53.0 HP (38.7 kW)) @ 7500 RPM
Capacity:550.4 ccm (33.59 cubic inches)
 
 

Physical measures and capacities

Fuel Capacity15.00 litres (3.96 US gallons)
Wheelbase1580 mm (62.2 inches)
Overall Width795 mm (31.3 inches)
Overall Length2165 mm (85.2 inches)
Overall Height1400 mm (55.1 inches)
Seat Height785 mm (30.9 inches) If adjustable, lowest setting.
Power/Weight Ratio0.2524 HP/kg
Wet Weight226.0 kg (498.2 pounds)
Dry Weight210.0 kg (462.9 pounds)

Kymco Ak 550I dimensions and frame

WheelsAluminium alloy
Rear BrakesSingle disc. ABS
Brake Disc Diameter260 mm (10.2 inches)
Front BrakesDouble disc. ABS
Rear Tyre160/60-R15
Front Tyre120/70-R15
Rear Wheel Travel48 mm (1.9 inches)
Rear SuspensionHorizontal Trailing Arm
Front Wheel Travel120 mm (4.7 inches)
Front Suspension41mm Inverted Fork
FrameUnderbone

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Tire pressure rear39 PSI (2.7 Bar or 270 kPa)
Tire pressure front36 PSI (2.5 Bar or 250 kPa)
Idle speed1200 +/- 100 RPM
Spark plugsNGK: CR7E
Coolant1.00 litres (0.26 US gallons)
Update specsReport missing specs or required updates.
CommentsWindscreen. Heated grips. Keyless. USB.
Warranty2 Year Limited Factory Warranty (Extended Warranty Packages Available)
Carrying CapacityUnderseat storage
LightingLED lights
Oil capacity3.00 litres (3.17 US quarts)
DrivelineCVT
Engine typeTwin, four-stroke
Model year2025

Performance Profile & Rider Fit

53 hp
Peak Power
4.8s
0-60 mph

Best For

Track25%
City75%
Cornering60%
Daily Riding82%
Touring80%
Passenger78%

Rider Profile

Best ForSuits riders with at least some experience on larger, heavier two-wheelers, since the maxi-scooter's weight and size demand confident low-speed handling.
PurposeBuilt as a big-wheel maxi-scooter that blends brisk highway performance with commuting convenience, comfort features, and light touring capability.
Rider FitA tall seat height and substantial wet weight mean shorter or less experienced riders may find it a handful at a stop or when maneuvering in tight spaces.
CharacterRefined and torquey, with a twin-cylinder engine and CVT that deliver smooth, strong acceleration and a relaxed, premium-feeling ride.
Not Ideal ForNot a good fit for off-road use, track enthusiasts seeking razor-sharp cornering, or riders wanting a lightweight, flickable city runabout.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2025 Kymco Ak 550I Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 785mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2025 Kymco Ak 550I, with a moderate knee angle of around 110 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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