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Minibike, cross · 2023

MX55

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MotoLibrary Score
38 /100 Commuter
Power/Weight
0.23 hp/kg
Engine
55 ccm

2023 Factory Bike MX55 Technical Analysis & Specification Breakdown

Positioned in Factory Bike's minibike, cross motorcycle lineup, the 2023 Factory Bike MX55 pairs a 55 cc (3.4 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 9 HP (6.6 kW), transferring power to the rear wheel through a automatic gearbox and chain final drive. With a specific output of 163.6 HP per liter, the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.

On the scales, the MX55 measures 40 kg (88 lbs) dry, translating to a power-to-weight ratio of 0.23 HP/kg (4.44 kg per horsepower). Rider ergonomics and chassis geometry center around a 915 mm (36 in) wheelbase engineered for quick, flickable steering geometry. The 1.5-liter (0.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.

Specific Output
163.6 HP/L
Power-to-Weight
0.23 HP/kg (4.44 kg/HP)
Engine
Displacement 55.0 ccm (3.36 cubic inches)
Engine Type Single cylinder, two-stroke
Power 9.0 HP (6.6 kW))
Fuel System Carburettor
Lubrication Oil mix 1:20
Cooling Air
Transmission
Gearbox Automatic
Final Drive Chain (final drive)
Clutch Multidisc in oil cath
Chassis
Front Suspension Inverted fork
Rear Suspension Monoshock
Wheelbase 915 mm (36.0 inches)
Wheels & Brakes
Front Tyre 60/100-R12
Rear Tyre 80/100-R10
Front Brakes Single disc
Front Brake Ø 100 mm (3.9 inches)
Rear Brakes Single disc
Rear Brake Ø 100 mm (3.9 inches)
Dimensions & Weight
Dry Weight 40.0 kg (88.2 pounds)
Power/Weight 0.2250 HP/kg
Fuel Capacity 1.50 litres (0.40 US gallons)
Other
Starter Kick
Color Options Red/White/Blue
Notes

Spanish brand

More from Factory Bike
Buying Checklist

Before You Compare This Bike

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.
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.
Rider Profile

Who Is This Bike For?

🟢
Beginner
A2 license compatible, manageable power.
🌲
Best For
Off-Road & Adventure
⚖️
Handling
Very lightweight — easy to handle
Estimate

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