Suzuki GP RT63 vs KTM 125 SX (2024)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Suzuki GP RT63stacks up against the KTM 125 SX. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Suzuki GP RT63 | KTM 125 SX |
|---|---|---|
| Model year | 1963 | 2024 |
| Price | — | — |
| Engine | 124 cc | 125 cc |
| Weight | — | 92 kg |
| Seat height | — | 38 mm |
| Fuel capacity | — | 1.9 L |
| Fuel type | petrol | petrol |
| Transmission | 8-speed | 6-speed |
| Front brakes | — | Single disc |
| Rear brakes | — | Single disc |
| Tires | — | 1.6-21 / 2.15-19 |
Suzuki GP RT63 vs KTM 125 SX — which should you buy?
Picking between the Suzuki GP RT63 and the KTM 125 SX usually comes down to the numbers you care about most. On paper, the Suzuki GP RT63 brings its published horsepower, while the KTM 125 SX counters with its own power figure at 92 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:

