22 June. Monday 2026
Aprilia RX 125 - 1985 Specifications and Reviews
The 1985 Aprilia RX 125 is a competitive motocross bike designed for amateur and intermediate riders seeking lightweight performance. Its liquid-cooled single-cylinder engine delivers 34 horsepower with a square bore and stroke configuration, paired with a six-speed gearbox for responsive trail and circuit riding. Known for its nimble handling and durability, the RX 125 established Aprilia as a serious contender in the European off-road racing scene.
General information | |
| Category | Cross / motocross |
| Year | 1985 |
| Model | Aprilia RX 125 |
Engine and Transmission Specifications | |
| Transmission typefinal drive | Chain |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Fuel control | Membrane |
| Bore x stroke | 54.0 x 54.0 mm (2.1 x 2.1 inches) |
| Compression | 14.5:1 |
| Power | 34.00 |
| Stroke | 2 |
| Engine type | Single cylinder |
| Capacity: | 124.00 ccm (7.57 cubic inches) |
| | |
Physical measures and capacities | |
| Weight incl. oil, gas, etc | 91.0 kg (200.6 pounds) |
| | |
Aprilia RX 125 dimensions and frame | |
| Rear brakes | Expanding brake |
| Front brakes | Single disc |
| Rear tyre dimensions | 4.00-18 |
| Front tyre dimensions | 3.00-21 |
Speed and acceleration | |
| Top speed | 130.0 km/h (80.8 mph) |
Other specs | |
| Fuel capacity | 8.50 litres (2.25 gallons) |
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