Trials Bikes
2011AJS JSM Trail 125
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The 2011 AJS JSM Trail 125 is an accessible trail bike designed for beginner and recreational riders seeking affordable off-road adventure. Known for its lightweight construction at 115kg and comfortable 760mm seat height, it combines basic trail capability with user-friendly handling. The electric starter and modest power delivery make it ideal for learning fundamental dirt biking skills on varied terrain.
- Capacity
- 124.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 115.0 kg
- Seat height
- 760 mm
- Power
- 10.1 HP (7.4 kW)
What’s new for the 2011 AJS JSM Trail 125
vs the 2010| Spec | 2010 | 2011 |
|---|---|---|
| Power | 11.0 HP (8.1 kW) | 10.1 HP (7.4 kW) |
| Front suspension | USD fork | USD telefork |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- It is built purely for technical trials riding over rocks, logs, and steep obstacles at very low speeds rather than for any road-going transportation.
- Built for
- The bike feels nimble, responsive, and playful, rewarding precise throttle and balance input rather than outright power.
- Not ideal for
- It is not suitable for riders wanting highway speed, long-distance touring comfort, or carrying a passenger.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Engine
- Capacity
- 124.0 ccm
- Power
- 10.1 HP (7.4 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.0878 HP/kg
- Bore x stroke
- 54.0 x 54.0 mm
- Fuel system
- Carburettor
- Starting
- Electric
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
Performance
- Top speed
- 100.0 km/h (62.1 mph)
Dimensions & weight
- Wheelbase
- 1400 mm
- Seat height
- 760 mm
- Dry weight
- 115.0 kg
- Fuel capacity
- 8.50 litres
Chassis & suspension
- Front suspension
- USD telefork
- Rear suspension
- Pro Shock linked.
Brakes & wheels
- Front brakes
- Single disc
- Rear brakes
- Single disc
- Front tyre
- 3.00-21
- Rear tyre
- 4.10-18
Other
- Color options
- Black, white, orange
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 | 2010 | 2011 |
|---|---|---|
| Capacity | 124.00 ccm (7.57 cubic inches) | 124.00 ccm (7.57 cubic inches) |
| Dry weight | 115.0 kg (253.5 pounds) | 115.0 kg (253.5 pounds) |
| Seat height | 760 mm (29.9 inches) | 760 mm (29.9 inches) |
| Fuel capacity | 8.50 litres (2.25 gallons) | 8.50 litres (2.25 gallons) |
| Color options | Black, white, orange | Black, white, orange |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the AJS JSM Trail 125?
The 2011 AJS JSM Trail 125 has a Capacity of 124.0 ccm (7.57 cubic inches).
What engine power does the AJS JSM Trail 125 have?
The 2011 AJS JSM Trail 125 has a Power of 10.1 HP (7.4 kW).
How many gears does the AJS JSM Trail 125 have?
The 2011 AJS JSM Trail 125 has a Gearbox of 5-speed.
How much does the AJS JSM Trail 125 weigh?
The 2011 AJS JSM Trail 125 has a Dry weight of 115.0 kg (253.5 pounds).
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