AJS NAC12 125 MK2 vs Keeway RK III 125S (2015)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the AJS NAC12 125 MK2stacks up against the Keeway RK III 125S. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | AJS NAC12 125 MK2 | Keeway RK III 125S |
|---|---|---|
| Model year | 2015 | 2014 |
| Price | — | — |
| Engine | 124 cc | 124 cc |
| Horsepower | 11 hp | 11 hp |
| Torque | — | 9 Nm |
| Weight | 153 kg | 128 kg |
| Seat height | 30 mm | 32 mm |
| Fuel capacity | 4.8 L | 4.2 L |
| Fuel type | petrol | petrol |
| Transmission | 5-speed | 5-speed |
| Front brakes | Double disc | Expanding brake (drum brake) |
| Rear brakes | Single disc | Single disc |
| Tires | 100/80-17 / 130/70-17 | 2.75-18 / 3.25-18 |
AJS NAC12 125 MK2 vs Keeway RK III 125S — which should you buy?
Picking between the AJS NAC12 125 MK2 and the Keeway RK III 125S usually comes down to the numbers you care about most. On paper, the AJS NAC12 125 MK2 brings 11 hp in a 153 kg package, while the Keeway RK III 125S counters with 11 hp at 128 kg.
Our spec tables above highlight the winning number on each line. For the full rider-focused reviews including real-world fuel economy, service costs and available colors, click into either bike: