Aprilia STX 125 (1985)
Comparison technical specifications
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| Make: | Aprilia |
| Model: | STX 125 |
| Years: | 1985 |
| Engine: | Two stroke, single cylinder |
| Capacity: | 124cc / 7.6 cu in |
| Bore x Stroke: | 52.8 mm x 57mm |
| Compression Ratio: | 14.5:1 |
| Cooling System: | Liquid cooled |
| Induction: | 26 Dell'Orto PHBH AS |
| Ignition: | Electronic |
| Starting: | Kick |
| Clutch: | Multi-disc oil bath |
| Max Power: | 15.7 kW / 21hp @ 8000 rpm |
| Transmission: | 6 Speed |
| Final Drive: | Chain |
| Frame: | Double cradle tubular steel |
| Rake: | 26.5° |
| Trail: | 86 mm / 3.4 in |
| Front Suspension: | Marzocchi Ø32 mm, non-adjustable |
| Rear Suspension: | Swingarm with single shock absorber |
| Front Brakes: | Single Ø240 mm disc |
| Rear Brakes: | Single Ø230 mm disc |
| Front Tyre: | 100-90 -16 |
| Rear Tyre: | 100-90 -18 |
| Seat Height: | 800 mm / 31.5in |
| Dry Weight: | 104 kg / 229 lbs |
| Top Speed: | 135 km/h / 83.9 mph |