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2020AJS Firefox 50

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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.

Capacity
49.0 ccm
Engine
Single, four-stroke
Gearbox
Not on record
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Dry weight
85.0 kg
Seat height
825 mm
Power
3.1 HP (2.3 kW) @ 8000 RPM
⇄ Compare with another bike + Add to garage All model years

What’s new for the 2020 AJS Firefox 50

vs the 2019
Spec20192020
Top speed 49.9 km/h (31.0 mph) 48.3 km/h (30.0 mph)
Other years 2012 2013 2014 2015 2016 2017 2018 2019 2020

How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 5Agility 60Comfort 35Off-road 5Touring 5Road manners 30
Off-road & trail5%
Cornering20%
City riding55%
Daily riding40%
Touring5%
Two-up10%
Track2%
Best for
It serves as a low-powered runabout for very short local trips such as commuting a few streets or running quick errands.
Built for
It suits a cautious, practical rider who values simplicity, low running costs, and easy legal access over performance or excitement.
Not ideal for
It is not suitable for anyone wanting real speed, highway travel, passenger carrying, or any kind of off-road capability.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

Worked out in your browser - nothing is sent to us
At 825mm, a rider of 68.9" with a 31" (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.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

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Full specifications

Engine
Capacity
49.0 ccm
Power
3.1 HP (2.3 kW) @ 8000 RPM
Engine type
Single, four-stroke
Power/weight ratio
0.0365 HP/kg (dry)
Bore x stroke
39.0 x 41.5 mm
Cooling system
Air
Fuel system
Carburettor
Starting
Electric & kick
Ignition
CDI
Transmission
Transmission type
Automatic
Final drive
Belt
Performance
Top speed
48.3 km/h (30.0 mph)
Dimensions & weight
Wheelbase
1285 mm
Overall length
1850 mm
Overall width
640 mm
Overall height
1160 mm
Seat height
825 mm
Dry weight
85.0 kg
Wet weight
91.0 kg
Fuel capacity
6.30 litres
Chassis & suspension
Frame
Steel
Front suspension
Telescopic fork
Rear suspension
Single shock
Brakes & wheels
Front brakes
Single disc
Rear brakes
Expanding brake (drum brake)
Front tyre
120/70-12
Rear tyre
120/70-12
Other
Color options
White, blue,Black
Warranty
12
Comments
Sold in the UK.

Specs last verified against published sources: .

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted
Specification 20122014201620182020
Capacity 49 cc 49 cc 49 cc 49 cc 49 cc
Dry weight 85 kg 85 kg 85 kg 85 kg 85 kg
Seat height 825 mm 825 mm 735 mm 825 mm 825 mm
Fuel capacity 4.7 L 4.7 L 4.7 L 6.3 L 6.3 L

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB

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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Common questions

What is the engine size of the AJS Firefox 50?

The 2020 AJS Firefox 50 has a Capacity of 49.0 ccm (2.99 cubic inches).

What engine power does the AJS Firefox 50 have?

The 2020 AJS Firefox 50 has a Power of 3.1 HP (2.3 kW) @ 8000 RPM.

How much does the AJS Firefox 50 weigh?

The 2020 AJS Firefox 50 has a Dry weight of 85.0 kg (187.4 pounds).

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