KTM SX 65 vs GAS GAS TXT Boy 50 (with power-boost kit) (2026)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the KTM SX 65stacks up against the GAS GAS TXT Boy 50 (with power-boost kit). Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | KTM SX 65 | GAS GAS TXT Boy 50 (with power-boost kit) |
|---|---|---|
| Model year | 2026 | 2002 |
| Price | $5,899 | — |
| Engine | 64 cc | 68 cc |
| Weight | 53 kg | — |
| Seat height | 730 mm | — |
| Fuel capacity | 4.0 L | — |
| Fuel type | petrol | petrol |
| Transmission | Manual, 6 speed, Chain | 2-speed |
| Front brakes | Hydraulic Disc | Single disc |
| Rear brakes | Hydraulic Disc | Single disc |
| Tires | Maxxis® MX-ST 60/100 R14 30M / Maxxis® MX-ST 80/100 R12 41M | -16 / -14 |
KTM SX 65 vs GAS GAS TXT Boy 50 (with power-boost kit) — which should you buy?
Picking between the KTM SX 65 and the GAS GAS TXT Boy 50 (with power-boost kit) usually comes down to the numbers you care about most. On paper, the KTM SX 65 brings its published horsepower in a 53 kg package, while the GAS GAS TXT Boy 50 (with power-boost kit) counters with its own power figure.
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: