AJS Firefox 50 - 2020 Specifications and Reviews

The 2020 AJS Firefox 50 is a lightweight commuter scooter designed for new riders and urban users seeking affordable, practical transport. Known for its compact dimensions and low seat height, it offers easy handling and accessibility for riders of all experience levels. The model features dual braking systems and reliable electric starting, making it an economical choice for daily city riding.

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Engine and Transmission Specifications

DrivelineCVT Automatic
Transmission typeBelt   (final drive)
GearboxAutomatic
Cooling systemAir
Fuel systemCarburettor
Bore x Stroke39.0 x 41.5 mm (1.5 x 1.6 inches)
Top speed48.3 km/h (30.0 mph)
Power3.0 HP (2.2 kW) @ 8000 RPM
Engine typeSingle cylinder, four-stroke
Capacity:49.0 ccm (2.99 cubic inches)
 
 

CategoryScooter
Year2020
ModelAJS Firefox 50

Brakes, suspension, Frame and wheels

Rear brakesExpanding brake (drum brake)
Front brakesSingle disc
Rear tire120/70-12
Front tire120/70-12
Rear SuspensionSingle shock
Front SuspensionTelescopic fork
Frame typeSteel

Physical measures and capacities

Fuel capacity6.30 litres (1.66 US gallons)
Wheelbase1285 mm (50.6 inches)
Overall width640 mm (25.2 inches)
Overall length1850 mm (72.8 inches)
Overall height1160 mm (45.7 inches)
Seat height825 mm (32.5 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc91.0 kg (200.6 pounds)
 
 

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
CommentsSold in the UK.
Factory warranty12 months parts and labour
Electrical12V 6Ah battery.
StarterElectric & kick
Color optionsWhite, blue,Black

Performance Profile & Rider Fit

3 hp
Peak Power
30 mph
Top Speed

Best For

Track2%
City55%
Cornering20%
Daily Riding40%
Touring5%
Passenger10%

Rider Profile

Best ForThis moped is designed for absolute beginners, learners, or young riders taking their first steps on two wheels.
PurposeIt serves as a low-powered runabout for very short local trips such as commuting a few streets or running quick errands.
Rider FitIts light weight and low seat height make it accessible to smaller or less physically strong riders with minimal effort required to handle it.
CharacterIt suits a cautious, practical rider who values simplicity, low running costs, and easy legal access over performance or excitement.
Not Ideal ForIt is not suitable for anyone wanting real speed, highway travel, passenger carrying, or any kind of off-road capability.

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

Rider Fit Visualizer

2020 AJS Firefox 50 Rider Ergonomics Assessment

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

Feet:

At 825mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2020 AJS Firefox 50, 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 2020 AJS Firefox 50 motorcycle is a sleek and stylish entry-level bike that offers great performance at an affordable price. With a 49cc air-cooled engine, this motorcycle is perfect for city commuting or casual weekend rides. The lightweight design and nimble handling make it easy to maneuver through traffic and around tight corners. The retro-inspired aesthetics, including the chrome accents and classic round headlight, give the Firefox 50 a timeless appeal. Additionally, the comfortable seat and ergonomic riding position make for an enjoyable riding experience, even on longer journeys. Overall, the 2020 AJS Firefox 50 is a fantastic choice for beginners or anyone looking for a reliable and budget-friendly motorcycle. Its efficient engine, modern features, and retro design make it a standout option in its class. Whether you're a new rider or a seasoned enthusiast, the Firefox 50 is a fun and practical choice for getting around town or taking scenic rides on the open road. With its combination of style, performance, and affordability, the AJS Firefox 50 is a top contender in the entry-level motorcycle market.
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