Yamaha XS 500 (1973-74) vs Aprilia RC 125 (1977-82)
Comparison technical specifications
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| Make: | Yamaha | Aprilia |
| Model: | XS 500 | RC 125 |
| Years: | 1973-74 | 1977-82 |
| Engine: | Four stole, parallel twin cylinder. DOHC | Single cylinder, two stroke |
| Capacity: | 498 cc / 30.5 cu-in | 125 cc / 7.6 cu in |
| Cooling System: | Air cooled | Air cooled |
| Induction: | 2x 38mm Mikuni carburetor | Carburetor |
| Starting: | Electric & kick | Kick |
| Max Power: | 48 hp / 36.5 kW @ 8500 rpm | 17.2 kW / 23 hp @ 10 000 rpm |
| Transmission: | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Telescopic fork. | Telescopic fork |
| Rear Suspension: | Dual shocks swing arm, preload adjustable! | Swingarm, dual shocks with coil springs |
| Front Brakes: | Single 267mm disc | Drum |
| Rear Brakes: | Drum | Drum |
| Front Tyre: | 3.25-19 | 21 in |
| Rear Tyre: | 3.50-18 | 18 in |