Aprilia ST 125 (1982-84)
Comparison technical specifications
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| Make: | Aprilia |
| Model: | ST 125 |
| Years: | 1982-84 |
| Engine: | Two stroke, single cylinder |
| Capacity: | 124 cc / 7.6 cu in |
| Bore x Stroke: | 52.8 mm x 57mm |
| Compression Ratio: | 14.5:1 |
| Cooling System: | Liquid cooled |
| Induction: | Ø28 mm Dell'Orto PHBH AS |
| Ignition: | Electronic |
| Battery: | 12V 5.5 Ah |
| Generator: | 130W |
| Starting: | Kick |
| Clutch: | Multi-disc oil bath |
| Max Power: | 13.8 Nm / 18.5 hp @ 8250 rpm |
| Transmission: | 6 Speed |
| Final Drive: | Chain |
| Frame: | Double cradle tubular steel |
| Front Suspension: | Marzocchi Ø32mm fork. non-adjustable |
| Rear Suspension: | Swingarm with single shock absorber |
| Front Brakes: | Single Ø230 mm disc |
| Rear Brakes: | Ø160mm drum |
| Front Wheel: | 2.75-18 |
| Rear Wheel: | 3.00-18 |
| Seat Height: | 800 mm / 31.5 in |
| Dry Weight: | 104 kg / 229 lbs |
| Top Speed: | 126.8 km/h / 78.8 mph |