The Aprilia STX 125 is a two stroke, single cylinder motorcycle produced in 1985. It has a 124cc engine with a compression ratio of 14.5:1 and a maximum power of 15.7 kW / 21hp at 8000 rpm. It features a liquid cooled system, 26 Dell’Orto PHBH AS induction, and electronic ignition. The motorcycle has a six speed transmission and a chain final drive. The frame is a double cradle tubular steel with a 26.5 degree rake and an 86mm trail. Front suspension is non-adjustable Marzocchi ~A32 mm and the rear suspension is a swingarm with a single shock absorber. Braking is provided by a single ~A240 mm front disc and a single ~A230 mm rear disc, with 100-90 -16 front and 100-90 -18 rear tyres. The seat height is 800mm / 31.5in and the dry weight is 104 kg / 229 lbs. The top speed for this motorcycle is 135 km/h / 83.9 mph.
Technical specifications:
Make Model: Aprilia STX 125
| Year | 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 degrees |
| Trail | 86 mm / 3.4 in |
| Front Suspension | Marzocchi ~A32 mm, non-adjustable |
| Rear Suspension | Swingarm with single shock absorber |
| Front Brakes | Single ~A240 mm disc |
| Rear Brakes | Single ~A230 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 |
