Keeway RKS 125 Sport E4 vs UM Max ZR (2021)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Keeway RKS 125 Sport E4stacks up against the UM Max ZR. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Keeway RKS 125 Sport E4 | UM Max ZR |
|---|---|---|
| Model year | 2021 | 2021 |
| Price | — | — |
| Engine | 124 cc | 124 cc |
| Horsepower | 11 hp | 11 hp |
| Torque | 10 Nm | 9 Nm |
| Weight | 136 kg | 100 kg |
| Seat height | 30 mm | 30 mm |
| Fuel capacity | 4.2 L | — |
| Fuel type | petrol | petrol |
| Transmission | 5-speed | 5-speed |
| Front brakes | Single disc | Expanding brake (drum brake) |
| Rear brakes | Single disc | Expanding brake (drum brake) |
| Tires | 90/90-17 / 120/80-17 | 2.75-18 / 44273 |
Keeway RKS 125 Sport E4 vs UM Max ZR — which should you buy?
Picking between the Keeway RKS 125 Sport E4 and the UM Max ZR usually comes down to the numbers you care about most. On paper, the Keeway RKS 125 Sport E4 brings 11 hp in a 136 kg package, while the UM Max ZR counters with 11 hp at 100 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: