Positioned in Honda's sport motorcycle lineup, the 1979 Honda MB50 features a 49 cc (3 cu in) air-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 7 HP (5.1 kW) at 9,000 rpm while maximum torque reaches 5.4 Nm (4 lb-ft) at 6,000 rpm, transferring power to the rear wheel through chain final drive. Internal engine geometry specifies a bore and stroke of 39.0 x 41.1 mm (1.5 x 1.6 inches) with a 7.6:1 compression ratio.
On the scales, the MB50 measures 90 kg (198 lbs) wet (curb), translating to a power-to-weight ratio of 0.08 HP/kg (12.86 kg per horsepower). Rider ergonomics and chassis geometry center around a 750 mm (29.5 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops. The 9-liter (2.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Power-to-Weight
0.08 HP/kg (12.86 kg/HP)
Power Band Window
6,000–9,000 rpm
Standover Height
750 mm (29.5 in)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, two-stroke
Power7.0 HP (5.1 kW)) @ 9000 RPM
Torque5.4 Nm (0.6 kgf-m or 4.0 ft.lbs) @ 6000 RPM
Compression7.6:1
Bore x Stroke39.0 x 41.1 mm (1.5 x 1.6 inches)
Fuel SystemCarburettor. Keihin 13mm PF05B
IgnitionCDI
CoolingAir
Transmission
Final DriveChain (final drive)
Chassis
Frame TypeSeel Spine
Front SuspensionHydraulic fork 27mm
Rear SuspensionDual dampers preload adjustable
Wheels & Brakes
Front Tyre2.50-18
Rear Tyre2.5-16
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Weight incl.90.0 kg (198.4 pounds)
Seat Height750 mm (29.5 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.
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.
