Suzuki GS 400 vs Yamaha RD 400 (1979)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Suzuki GS 400stacks up against the Yamaha RD 400. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Suzuki GS 400 | Yamaha RD 400 |
|---|---|---|
| Model year | 1977 | 1979 |
| Price | — | — |
| Engine | 398 cc | 399 cc |
| Horsepower | 27 hp | 43 hp |
| Fuel capacity | 3.7 L | 4.4 L |
| Fuel type | petrol | petrol |
| Transmission | 6-speed | 6-speed |
| Front brakes | Single disc | Single disc |
| Rear brakes | Expanding brake | Single disc |
| Tires | 3.00-18 / 3.50-18 | 3.00-18 / 3.50-18 |
Suzuki GS 400 vs Yamaha RD 400 — which should you buy?
Picking between the Suzuki GS 400 and the Yamaha RD 400 usually comes down to the numbers you care about most. On paper, the Suzuki GS 400 brings 27 hp, while the Yamaha RD 400 counters with 43 hp.
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: