AJS JS125-X: specs and comparison
AJS JS125-X (Naked, since 2026): 125 cc engine, 11 kW / 15 hp, 133 kg (with fluids), seat height 800 mm. Licence: A1 / 125.
Also written as: AJS JS125X, AJS JS125 X
Compare AJS JS125-X with any model
Specs
Version since 2026
| Years | since 2026 |
|---|---|
| Type | Naked |
| Licence | A1 / 125 |
| Engine | 125 cm³, 1 cyl. |
| Power | 11 kW / 15 hp |
| Weight | 133 kg (with fluids) |
| Seat height | 800 mm |
| ABS | ABS |
| Drive / gearbox | chain, manual |
| Tank | 10 l |
| Fuel use | 2.9 l/100 km |
| Range on one tank | 300 km |
| Used price (estimate) | £2,800 |
Why it's worth it
- Very low fuel use
- Cheap and simple servicing
- Smooth, predictable power
- Light: up to 150 kg (140 kg dry)
Weak points
- Small dealer network
- Budget build quality
What to check on a used one
- Chain and sprockets: slack, stiff links, hooked teeth
- Battery and charging: fast, strong start
- Electrical connectors: corrosion, lights, switches
Similar motorcycles
- Honda CB125R 125 cm³ · 11 kW · 816 mm
- Yamaha MT-125 125 cm³ · 11 kW · 810 mm
- Suzuki GSX-S125 125 cm³ · 11 kW · 785 mm
- KTM 125 Duke 125 cm³ · 11 kW · 800 mm
- Kawasaki Z125 125 cm³ · 11 kW · 815 mm
- Voge 125R 125 cm³ · 11 kW · 795 mm
- Zontes ZT125-G1 125 cm³ · 11 kW · 795 mm
- QJ Motor SRK 125 S 125 cm³ · 11 kW · 790 mm
Questions
Is the AJS JS125-X A2-legal?
Yes: 11 kW is within the A2 limit of 35 kW. Some countries also check 0.2 kW per kg, so confirm the papers of the bike you buy.
What is the seat height of the AJS JS125-X?
800 mm. Whether you reach the ground also depends on the seat width: the finder estimates it from your height and inseam.
How much does the AJS JS125-X weigh?
133 kg (with fluids).
What is the fuel use and range of the AJS JS125-X?
About 2.9 l/100 km; with the 10 l tank that is roughly 300 km before the reserve.
Specs from makers and test sources; prices are estimates. Check the bike you buy.