From 2010 the two-stroke RX 125 continued on the same trellis-framed chassis introduced for 2008, with the 40 mm upside-down fork, piggyback rear…
| MODEL | APRILIA RX 125R 2010 - 2013 |
| Year | 2010 - 2013 |
| Engine Type | Single cylinder, two-stroke, aluminium cylinder with Nikasil liner, reed-valve intake, Euro 3 |
| Displacement / Capacity | 124.8 cc / 7.6 cu in |
| Bore X Stroke | 54 x 54.5 mm |
| Compression Ratio | 12.5:1 |
| Cooling System | Liquid cooled |
| Max Power | 15.7 kW / 21 hp |
| Max Torque | 16 Nm / 11.8 lb-ft |
| Ignition | Electronic CDI |
| Induction | Dell'Orto VHST 28 carburettor |
| Start System | Electric and kick |
| TRANSMISSION SPECS | |
| Lubrication | Separate oil mixing |
| Gear Box | 6-speed |
| Clutch | Wet multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | High-strength steel double trellis beam and double cradle, separate seat frame |
| Front Suspension | 40 mm upside-down telescopic fork, 260 mm travel |
| Rear Suspension | Steel swingarm, hydraulic monoshock with piggyback reservoir, 270 mm travel |
| Front Brakes | Single 260 mm disc, 2-piston caliper |
| Rear Brakes | Single 220 mm disc, 1-piston caliper |
| DIMENSION SPECS | |
| Overall Length | 2165 mm / 85.2 in |
| Overall Width | 850 mm / 33.5 in |
| Overall Height | — |
| Seat Height | 830 mm / 32.7 in |
| Wheelbase | 1480 mm / 58.3 in |
| Ground Clearance | — |
| Dry Weight | 116 kg / 256 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 120/90-18 |
| FUEL SYSTEM | |
| Fuel Capacity | 10 Litres / 2.6 US gal |
| Fuel Consumption | 5.4 L/100 km / 43 US mpg |
| Top Speed | 120 km/h / 75 mph |
From 2010 the two-stroke RX 125 continued on the same trellis-framed chassis introduced for 2008, with the 40 mm upside-down fork, piggyback rear shock and 260/220 mm discs. Published figures for this period reflect the restricted learner-legal tune of about 21 hp, and it stayed one of the last two-stroke enduros on sale for 125 licence holders.
