Positioned in Honda's scooter motorcycle lineup, the 2003 Honda SFX 50 features a 49 cc (3 cu in) single cylinder, two-stroke configuration. In factory specification, peak output is rated at 5.4 HP (3.9 kW) at 7,000 rpm while maximum torque reaches 5.8 Nm (4.3 lb-ft) at 6,500 rpm, transferring power to the rear wheel through a automatic gearbox. Internal engine geometry specifies a bore and stroke of 39.0 x 41.4 mm (1.5 x 1.6 inches).
On the scales, the SFX 50 measures 71 kg (157 lbs) dry, translating to a power-to-weight ratio of 0.08 HP/kg (13.15 kg per horsepower). Rider ergonomics and chassis geometry center around a 755 mm (29.7 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops. The 6-liter (1.6 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Power-to-Weight
0.08 HP/kg (13.15 kg/HP)
Power Band Window
6,500–7,000 rpm
Standover Height
755 mm (29.7 in)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power5.4 HP (3.9 kW)) @ 7000 RPM
Torque5.8 Nm (0.6 kgf-m or 4.3 ft.lbs) @ 6500 RPM
Bore x Stroke39.0 x 41.4 mm (1.5 x 1.6 inches)
Transmission
GearboxAutomatic
Wheels & Brakes
Front Tyre100/80-10
Rear Tyre100/80-10
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight71.0 kg (156.5 pounds)
Power/Weight0.0761 HP/kg
Seat Height755 mm (29.7 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.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
