Hyosung RX125SM vs KTM SX 125 (2026)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Hyosung RX125SMstacks up against the KTM SX 125. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Hyosung RX125SM | KTM SX 125 |
|---|---|---|
| Model year | 2008 | 2026 |
| Price | — | $8,449 |
| Engine | 124 cc | 124 cc |
| Weight | 123 kg | 92 kg |
| Seat height | 33 mm | 958 mm |
| Fuel capacity | 2.1 L | 7.0 L |
| Fuel type | petrol | petrol |
| Transmission | 5-speed | Manual, 6 speed, Chain |
| Front brakes | Single disc | Hydraulic Disc |
| Rear brakes | Single disc | Hydraulic Disc |
| Tires | 110/70-M17 / 130/70-M17 | Dunlop® GEOMAX MX34 80/100 R21 51M / Dunlop® GEOMAX MX34 100/90 R19 57M |
Hyosung RX125SM vs KTM SX 125 — which should you buy?
Picking between the Hyosung RX125SM and the KTM SX 125 usually comes down to the numbers you care about most. On paper, the Hyosung RX125SM brings its published horsepower in a 123 kg package, while the KTM SX 125 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: