AJS JSM 50 Motard - 2012 Specifications and Reviews

The 2012 AJS JSM 50 Motard is a lightweight super motard designed for novice and younger riders seeking accessible urban mobility. Its 50cc two-stroke engine delivers modest performance suited to city commuting and casual riding. Known for its nimble handling and compact proportions, it offers an affordable entry point into motorcycle ownership.

2012
2.5 stars Average rating: 2.5 from 3 votes
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Engine and Transmission Specifications

ClutchWet, multiplate
Transmission type,final driveChain
Gearbox6-speed
Cooling systemLiquid
IgnitionCoil, CDI.
Fuel controlOHC
Fuel systemCarburettor
Bore x stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Top speed45.0 km/h (28.0 mph)
Power4.69
Engine typeSingle cylinder, two-stroke
Capacity:49.30 ccm (3.01 cubic inches)
 
 

CategorySuper motard
Year2012
ModelAJS JSM 50 Motard
 
 

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Front brakesSingle disc
Rear tyre dimensions130/70-17
Front tyre dimensions110/70-17
Rear suspensionSingle shock
Front suspensionTelescopic fork
Frame typeSteel

Physical measures and capacities

Fuel capacity8.50 litres (2.25 gallons)
Wheelbase1,400 mm (55.1 inches)
Seat height820 mm (32.3 inches) If adjustable, lowest setting.
Power/weight ratio0.0447 HP/kg
Dry weight105.0 kg (231.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlack with red, blue or orange graphics.
Electrical12V 6Ah battery
Light12V 35W35W headlights
StarterElectric

Performance Profile & Rider Fit

4.7 hp
Peak Power
28 mph
Top Speed

Best For

Track15%
City55%
Cornering40%
Daily Riding30%
Touring8%
Passenger5%

Rider Profile

Best ForThis is a beginner-friendly minibike, ideal for young or novice riders learning throttle and clutch control rather than experienced riders seeking performance.
PurposeBuilt as a small-capacity supermoto-styled learner bike for low-speed fun, basic skills practice, and short recreational rides rather than serious transport.
Rider FitIts very low power output and light 105 kg weight make it easy and unintimidating to handle for smaller or lighter riders, including teenagers.
CharacterIt has playful, toy-like supermoto styling with sporty ergonomics but delivers only mild, moped-level performance to match its tiny two-stroke engine.
Not Ideal ForIt is not suitable for adult commuting, highway travel, touring, or any rider expecting real acceleration or top speed.

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

Rider Fit Visualizer

2012 AJS JSM 50 Motard Rider Ergonomics Assessment

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

Feet:

At 820mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with balls of both feet on the 2012 AJS JSM 50 Motard, with a relaxed knee angle of around 125 degrees and a forward-leaning 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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