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MotoLibrary Score
38/100Commuter
Power
26 HP
Torque
26 Nm
Engine
278 ccm
Technical Overview
2025 Sym ADX 300 Key Specifications & Summary
The 2025 Sym ADX 300 is a scooter motorcycle manufactured by Sym, equipped with a 278.3 ccm (16.98 cubic inches) displacement unit (Single cylinder, four-stroke) with liquid cooling. In factory trim, the engine delivers a rated power of 25.5 HP (18.6 kW)) @ 8000 RPM and peak torque of 26.0 Nm (2.7 kgf-m or 19.2 ft.lbs) @ 6000 RPM, paired with a Automatic transmission and belt (final drive) final drive.
For rider ergonomics and real-world handling, key chassis measurements include a seat height of 790 mm (31.1 inches) If adjustable, lowest setting., fuel capacity of 15.00 litres (3.96 US gallons). Review the complete factory specification tables below to evaluate engine internals, suspension travel, braking hardware, tyre sizes and ownership estimates, or compare the 2025 Sym ADX 300 side by side against rival models in the Scooter lineup.
Engine
Displacement278.3 ccm (16.98 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power25.5 HP (18.6 kW)) @ 8000 RPM
Torque26.0 Nm (2.7 kgf-m or 19.2 ft.lbs) @ 6000 RPM
Fuel SystemInjection. EFI
Fuel ControlSingle Overhead Cams (SOHC)
CoolingLiquid
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineCVT
Performance
Emission DetailsEuro 5 Pluss
Chassis
Front SuspensionTelescope fork
Rear SuspensionDual Shock
Wheelbase1510 mm (59.4 inches)
Ground Clearance160 mm (6.3 inches)
Wheels & Brakes
Front Tyre120/70-15
Rear Tyre140/70-14
Front BrakesSingle disc. ABS.
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc. Bosh ABS.
Rear Brake Ø230 mm (9.1 inches)
Dimensions & Weight
Seat Height790 mm (31.1 inches) If adjustable, lowest setting.
Overall Height1325 mm (52.2 inches)
Overall Length2185 mm (86.0 inches)
Overall Width810 mm (31.9 inches)
Fuel Capacity15.00 litres (3.96 US gallons)
Other
StarterElectric
Color OptionsBlack, grey, white, Blue
InstrumentsLCD instrument panel
LightLED head light, LED position light, LED tail light, and LED turn indicators.
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.
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.
