The RX 250 was the larger sibling of the early RX 125, using a liquid-cooled 250 cc two-stroke single with a five-speed gearbox and around 47 hp.
| MODEL | APRILIA RX 250 1985 |
| Year | 1985 |
| Engine Type | Single cylinder, two-stroke |
| Displacement / Capacity | 246 cc / 15.0 cu in |
| Bore X Stroke | 72 x 61 mm / 2.8 x 2.4 in |
| Compression Ratio | 14.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 34.3 kW / 47 hp @ 8000 rpm |
| Max Torque | — |
| Ignition | — |
| Induction | Carburettor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | Wet multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel frame |
| Front Suspension | Hydraulic telescopic fork |
| Rear Suspension | Swingarm with single shock absorber |
| Front Brakes | Single disc |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | 2310 mm |
| Overall Width | 850 mm |
| Overall Height | — |
| Seat Height | 960 mm |
| Wheelbase | — |
| Ground Clearance | 360 mm |
| Dry Weight | 107 kg |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.00-21 |
| Rear Tyre | 4.50-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 8.5 Litres / 2.25 US gal |
| Fuel Consumption | — |
| Top Speed | 120 km/h / 74.6 mph |
The RX 250 was the larger sibling of the early RX 125, using a liquid-cooled 250 cc two-stroke single with a five-speed gearbox and around 47 hp. It shared the period layout of telescopic fork, single rear shock, front disc and rear drum, and with a 960 mm seat and 360 mm of ground clearance it was aimed squarely at serious enduro riding.
