14 August. Friday 2026
AJS JSM Trail 125 - 2011 Specifications and Reviews
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.
2011
General information | |
| Category | Trial |
| Year | 2011 |
| Model | AJS JSM Trail 125 |
| | |
Engine and Transmission Specifications | |
| Transmission type,final drive | Chain |
| Gearbox | 5-speed |
| Fuel control | OHC |
| Fuel system | Carburettor |
| Bore x stroke | 54.0 x 54.0 mm (2.1 x 2.1 inches) |
| Top speed | 100.0 km/h (62.1 mph) |
| Power | 10.06 |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 124.00 ccm (7.57 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Single disc |
| Front brakes | Single disc |
| Rear tyre dimensions | 4.10-18 |
| Front tyre dimensions | 3.00-21 |
| Rear suspension | Pro Shock linked. |
| Front suspension | USD telefork |
Physical measures and capacities | |
| Fuel capacity | 8.50 litres (2.25 gallons) |
| Wheelbase | 1,400 mm (55.1 inches) |
| Seat height | 760 mm (29.9 inches) If adjustable, lowest setting. |
| Power/weight ratio | 0.0875 HP/kg |
| Dry weight | 115.0 kg (253.5 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Color options | Black, white, orange |
| Electrical | 12V 6Ah battery |
| Starter | Electric |
Performance Profile & Rider Fit
10.1 hp
Peak Power
62.1 mph
Top Speed
Best For
Track10%
City25%
Cornering40%
Daily Riding20%
Touring10%
Passenger5%
Rider Profile
| Best For | This trials bike suits riders who already have some off-road balance and clutch control skills, or beginners specifically training in trials technique. |
| Purpose | 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. |
| Rider Fit | Its light dry weight and slim frame make it very manageable for standing riding and body-shifting, though the tall 760mm seat height demands reasonable leg length and fitness. |
| Character | 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. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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