The 2025 Sym Jet 4 RX 50 is a scooter motorcycle manufactured by Sym, equipped with a 49.5 ccm (3.02 cubic inches) displacement unit (Single cylinder, four-stroke) with air cooling. In factory trim, the engine delivers a rated power of 3.0 HP (2.2 kW)) @ 8000 RPM and peak torque of 3.0 Nm (0.3 kgf-m or 2.2 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 curb weight of 107.0 kg (235.9 pounds), seat height of 815 mm (32.1 inches) If adjustable, lowest setting., fuel capacity of 6.20 litres (1.64 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 Jet 4 RX 50 side by side against rival models in the Scooter lineup.
Engine
Displacement49.5 ccm (3.02 cubic inches)
Engine TypeSingle cylinder, four-stroke
Power3.0 HP (2.2 kW)) @ 8000 RPM
Torque3.0 Nm (0.3 kgf-m or 2.2 ft.lbs) @ 6000 RPM
Bore x Stroke37.0 x 46.0 mm (1.5 x 1.8 inches)
Fuel SystemInjection. EFI
Fuel ControlOverhead Cams (OHC)
CoolingAir
Transmission
GearboxAutomatic
Final DriveBelt (final drive)
DrivelineCVT
Performance
Top Speed45.0 km/h (28.0 mph)
Emission DetailsEuro 5
Chassis
Front SuspensionTelescopic Fork
Rear SuspensionSingle Shock
Wheelbase1310 mm (51.6 inches)
Wheels & Brakes
Front Tyre110/70-12
Rear Tyre120/70-12
Front BrakesSingle disc
Front Brake Ø226 mm (8.9 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø110 mm (4.3 inches)
WheelsAluminium rims
Dimensions & Weight
Weight incl.107.0 kg (235.9 pounds)
Seat Height815 mm (32.1 inches) If adjustable, lowest setting.
Overall Height1110 mm (43.7 inches)
Overall Length1900 mm (74.8 inches)
Overall Width745 mm (29.3 inches)
Fuel Capacity6.20 litres (1.64 US gallons)
Other
StarterElectric
Color OptionsGrey, Black
InstrumentsLCD dashboard
LightLED lights
Notes
SYM scooters are produced by Sanyang Motor in 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.
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.
