Honda Monkey - 2021 Specifications and Reviews

The 2021 Honda Monkey is a fun-focused commuter bike ideal for urban riders and beginners seeking affordable, nimble transportation. Its compact 125cc air-cooled engine delivers reliable performance with fuel injection efficiency, while the lightweight frame and easy handling make it perfect for navigating city streets. Known for retro charm and practical simplicity, it remains a beginner-friendly icon.

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General information

CategoryAllround
Year2021
ModelHonda Monkey

Engine and Transmission Specifications

ClutchWet, multiplate
Transmission typeChain   (final drive)
Gearbox4-speed
Cooling systemAir
IgnitionFully transistorized
Fuel controlSingle Overhead Cams (SOHC)
Fuel systemInjection. PGM-FI with automatic enrichment
Valves per Cylinder2
Bore x Stroke52.4 x 57.9 mm (2.1 x 2.3 inches)
Compression9.3:1
Engine typeSingle cylinder, four-stroke
Capacity:124.9 ccm (7.62 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc. Hydraulic. Optional ABS.
Diameter220 mm (8.7 inches)
Front brakesSingle disc. Hydraulic. Optional ABS.
Rear tire130/80-12
Front tire120/80-12
Rear wheel travel104 mm (4.1 inches)
Rear SuspensionTwin shocks
Front wheel travel99 mm (3.9 inches)
Front Suspension31mm inverted fork
Trail81 mm (3.2 inches)
Rake (fork angle)25.0°
 
 

Physical measures and capacities

Reserve fuel capacity1.89 litres (0.50 US gallons)
Fuel capacity5.68 litres (1.50 US gallons)
Wheelbase1156 mm (45.5 inches)
Seat height777 mm (30.6 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc105.0 kg (231.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsModel id: MONKEY125.
Factory warrantyOne Year Unlimited-mileage
StarterKick
Color optionsPearl Glittering Blue, Pearl Nebula Red.

Performance Profile & Rider Fit

9.3 hp
Peak Power

Best For

Track5%
City80%
Cornering40%
Daily Riding45%
Touring8%
Passenger15%

Rider Profile

Best ForA great choice for beginners or even non-riders looking for a low-stakes, low-intimidation introduction to motorcycling.
PurposeBuilt for playful, short-distance fun around town rather than any kind of serious performance or distance riding.
Rider FitIts tiny size and low seat height make it extremely easy to handle for shorter or smaller riders, though tall riders may feel cramped.
CharacterA charming, retro-styled mini-bike that prioritizes fun, style, and novelty over speed or practicality.
Not Ideal ForNot suitable for highway commuting, touring, passengers, or anyone needing real performance or cargo capacity.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2021 Honda Monkey Rider Ergonomics Assessment

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 777mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2021 Honda Monkey, with a moderate knee angle of around 105 degrees and a slightly forward riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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Rider Reviews

Total comments: 1
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MotorcycleDB Review

The 2021 Honda Monkey motorcycle is a stylish and fun option for riders looking for a compact and nimble ride. Its retro design and small frame make it perfect for zipping around urban streets or taking on winding country roads. The 125cc engine provides enough power for a thrilling experience, while the compact size and lightweight build make it easy to handle for riders of all experience levels. With its low seat height and comfortable riding position, the 2021 Honda Monkey is a great choice for those who want a user-friendly and enjoyable motorcycle. In terms of features, the 2021 Honda Monkey comes with ABS brakes for added safety, as well as LED lighting for improved visibility. The digital instrumentation keeps riders informed about their speed and other important stats, while the 1.5 gallon fuel tank ensures plenty of range for short trips and commutes. Overall, the 2021 Honda Monkey offers a blend of style, fun, and practicality that makes it a standout option in the small-displacement motorcycle market.
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