Engineered by Honda for the naked motorcycle segment, the 2002 Honda Monkey 50 relies on a 49 cc (3 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 3.1 HP (2.3 kW) at 7,500 rpm while maximum torque reaches 3.1 Nm (2.3 lb-ft) at 6,000 rpm, transferring power to the rear wheel through a 4-speed gearbox and chain final drive. Internal engine geometry specifies a bore and stroke of 39.0 x 41.4 mm (1.5 x 1.6 inches) with a 10.0:1 compression ratio.
On the scales, the Monkey 50 measures 68 kg (150 lbs) wet (curb). Rider ergonomics and chassis geometry center around a 660 mm (26 in) seat height — giving shorter riders and urban commuters confident flat-foot reach at traffic stops, combined with a 895 mm (35.2 in) wheelbase engineered for quick, flickable steering geometry. The 4.5-liter (1.2 US gal) fuel tank supports practical everyday commuting and weekend road stints, while factory top speed is listed at 50 km/h (31 mph).
Within MotoLibrary's Honda archive, this model family spans 2 indexed model years from 2002 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Power Band Window
6,000–7,500 rpm
Standover Height
660 mm (26 in)
Engine
Displacement49.0 ccm (2.99 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Power3.1 HP (2.3 kW)) @ 7500 RPM
Torque3.1 Nm (0.3 kgf-m or 2.3 ft.lbs) @ 6000 RPM
Compression10.0:1
Bore x Stroke39.0 x 41.4 mm (1.5 x 1.6 inches)
Valves/Cylinder2
Fuel SystemCarburettor
Fuel ControlOverhead Cams (OHC)
IgnitionFull transistor type battery ignition
LubricationWet sump forced lubrication
CoolingAir
Transmission
Gearbox4-speed
Final DriveChain (final drive)
ClutchWet, multiplate
DrivelineRoller chain final drive
Chain Size428
Performance
Top Speed50.0 km/h (31.1 mph)
Chassis
Front SuspensionTelescopic fork
Rear SuspensionSwing arm
Wheelbase895 mm (35.2 inches)
Ground Clearance150 mm (5.9 inches)
Wheels & Brakes
Front Tyre3.50-8
Rear Tyre3.50-8
Front Tire Pressure1.8 bar (26 psi)
Rear Tire Pressure2.0 bar (29 psi)
Front BrakesExpanding brake
Rear BrakesExpanding brake
WheelsCast aluminium alloy rims
Dimensions & Weight
Dry Weight58.0 kg (127.9 pounds)
Weight incl.68.0 kg (149.9 pounds)
Power/Weight0.0534 HP/kg
Seat Height660 mm (26.0 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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
