At the heart of the 2011 Honda Monkey 50 minibike, cross motorcycle, Honda relies on a 49 cc (3 cu in) air-cooled single cylinder, four-stroke powerplant. In factory specification, peak output is rated at 3.6 HP (2.6 kW) at 8,500 rpm while maximum torque reaches 3.4 Nm (2.5 lb-ft) at 5,000 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 41.1 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 5.5-liter (1.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
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
5,000–8,500 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
Power3.6 HP (2.6 kW)) @ 8500 RPM
Torque3.4 Nm (0.3 kgf-m or 2.5 ft.lbs) @ 5000 RPM
Compression10.0:1
Bore x Stroke39.0 x 41.1 mm (1.5 x 1.6 inches)
Fuel SystemInjection. PGM-FI
Fuel ControlOverhead Cams (OHC)
IgnitionFull transistor type battery ignition
CoolingAir
Transmission
Gearbox4-speed
Final DriveChain (final drive)
ClutchWet, multiplate
Chassis
Rake25.0°
Trail42 mm (1.7 inches)
Front SuspensionTelescopic fork
Rear SuspensionSwing arm
Wheelbase895 mm (35.2 inches)
Ground Clearance145 mm (5.7 inches)
Wheels & Brakes
Front Tyre3.50-8
Rear Tyre3.50-8
Front BrakesExpanding brake (drum brake)
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Weight incl.68.0 kg (149.9 pounds)
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.
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.
