Harley-Davidson S-125 vs Yamaha RX 135 (1987)
Side-by-side spec comparison, pricing, and a plain-English breakdown of how the Harley-Davidson S-125stacks up against the Yamaha RX 135. Numbers pulled from manufacturer spec sheets — click either bike for the full review.
Spec comparison
| Spec | Harley-Davidson S-125 | Yamaha RX 135 |
|---|---|---|
| Model year | 1959 | 1987 |
| Price | — | — |
| Engine | 125 cc | 132 cc |
| Horsepower | — | 11 hp |
| Weight | 91 kg | 109 kg |
| Fuel type | petrol | petrol |
| Transmission | — | 4-speed |
| Front brakes | Expanding brake (drum brake) | — |
| Rear brakes | Expanding brake (drum brake) | — |
Harley-Davidson S-125 vs Yamaha RX 135 — which should you buy?
Picking between the Harley-Davidson S-125 and the Yamaha RX 135 usually comes down to the numbers you care about most. On paper, the Harley-Davidson S-125 brings its published horsepower in a 91 kg package, while the Yamaha RX 135 counters with 11 hp at 109 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: