AJS Firefox 50 - 2012 Specifications and Reviews

The 2012 AJS Firefox 50 is an entry-level automatic scooter ideal for new riders and urban commuters. Powered by a simple two-stroke 49cc engine, it delivers modest performance suitable for city streets and local travel. Known for its reliable, low-maintenance design and twist-and-go convenience, the Firefox 50 remains an affordable transportation solution.

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Engine and Transmission Specifications

DrivelineAutomatic Twist and Go
ClutchIgnition Coil CDI
Transmission type,final driveBelt
GearboxAutomatic
Cooling systemAir
IgnitionBattery 12v 6Ah
Fuel systemCarburettor
Bore x stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Top speed49.9 km/h (31.0 mph)
Power3.00
Engine typeSingle cylinder, two-stroke
Capacity:49.00 ccm (2.99 cubic inches)
 
 

CategoryScooter
Year2012
ModelAJS Firefox 50
 
 

Brakes, suspension, Frame and wheels

Rear brakesExpanding brake (drum brake)
Front brakesSingle disc
Front tyre dimensions120/70-12
Rear suspensionSingle shocks
Front suspensionTelescopic fork
Frame typeSteel

Physical measures and capacities

Fuel capacity4.70 litres (1.24 gallons)
Wheelbase1,320 mm (52.0 inches)
Seat height825 mm (32.5 inches) If adjustable, lowest setting.
Power/weight ratio0.0353 HP/kg
Dry weight85.0 kg (187.4 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsSilver
Factory warranty12 months parts and labour
Carrying capacityLockable storage space under the seat.. Luggage rack pre-drilled to accept a top box.
Electrical12V 6Ah battery.
StarterElectric & kick

Performance Profile & Rider Fit

3 hp
Peak Power
31 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

2012 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 2012 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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