KTM 380 SX vs Beta RR 4T 390 (2024)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the KTM 380 SXstacks up against the Beta RR 4T 390. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | KTM 380 SX | Beta RR 4T 390 |
|---|---|---|
| Model year | 2000 | 2024 |
| Price | — | — |
| Engine | 368 cc | 386 cc |
| Weight | 101 kg | 108 kg |
| Seat height | — | 37 mm |
| Fuel capacity | 2.0 L | 2.4 L |
| Fuel type | petrol | petrol |
| Transmission | — | 6-speed |
| Front brakes | Single disc | Single disc. 2-piston floating calipers |
| Rear brakes | Single disc | Single disc. single-piston floating caliper |
| Tires | — | 90/90-21 / 140/80-18 |
KTM 380 SX vs Beta RR 4T 390 — which should you buy?
Picking between the KTM 380 SX and the Beta RR 4T 390 usually comes down to the numbers you care about most. On paper, the KTM 380 SX brings its published horsepower in a 101 kg package, while the Beta RR 4T 390 counters with its own power figure at 108 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: