| General |
| Year | - | 2012 - 13 |
| Colours | Red, White, Red/black/orange, Red/white/blue | - |
| Make Model | - | Aprilia RS4 125 |
| Dimensions |
| Ground Clearance (mm) | 135 mm | - |
| Ground Clearance (in.) | 5.3 inches | - |
| Seat Height | 795 mm / 31.3 in. | 820 mm / 32.3 in |
| Wheelbase | 1,070 mm / 42.1 in. | 1350 mm / 53.1 in |
| Height | 1,175 mm / 46.3 in. | 1138 mm / 44.6 in |
| Length | 1,920 mm / 75.6 in. | 1953 mm / 76.8 in |
| Width | 675 mm / 26.6 in. | 740 mm / 29.1 in |
| Weights & Capacities |
| Dry Weight | 138 kg / 304.2 lbs | 122 kg / 269 lbs |
| Fuel Capacity | 10.00 litres / 2.64 gallons | 14.5 Liters / 3.8 gal |
| Wet Weight | 250.0 kg / 551.2 lbs | - |
| Performance |
| Max Power | - | 11.7 kW / 16 hp @ 10500 rpm |
| Max Torque | 10.60 Nm (1.1 kgf-m or 7.8 ft.lbs) | 11 Nm / 1.12 kgf-m / 8.1 ft/lb @ 8500 rpm |
| Power-to-Weight Ratio | 0.0942 HP/kg | - |
| Engine |
| Fuel Control | SOHC | - |
| Displacement (cc) | 124.70 cc | - |
| Bore x Stroke (in,) | 3.0 x 2.2 inches | - |
| Displacement (ci) | 7.61 cubic inches | - |
| Engine Type | Single cylinder, four-stroke | - |
| Bore x Stroke (mm) | 75.0 x 56.5 mm | - |
| Displacement | - | 124.8 cc / 7.6 cu in |
| Engine Detail | - | Four stroke, single cylinder, DOHC, 4 valves |
| Fuel System | Injection | - |
| Bore x Stroke | - | 58 X 47 mm |
| Compression Ratio | 11.0:1 | 12.5 ± 0.5:1 |
| Cooling System | - | Liquid cooled |
| Emissions | - | Euro 3 |
| Engine Lubrication | Forced pressure and wet sump | - |
| Fuel Induction | - | Electronic injection |
| Fuel Reserve | 4.00 litres / 1.06 gallons | - |
| Ignition | Computer-controlled digital transistorised with electronic advance? | Electronic with CDI capacity discharge |
| Starter | Electric | Electric |
| Valve System | 4 | - |
| Drivetrain |
| Clutch | Wet, multiplate, mechanical cable-actuated. | Multiple discs, in oil bath |
| Final Drive | Chain | Chain |
| Gear Ratios | - | 1st 11/33 (0.33) / 2nd 15/30 (0.50) / 3rd 18/27 (0.67) / 4th 20/24 (0.83) / 5th 25/27 (0.92) / 6th 23/22 (1.05) |
| Gearbox | 6-speed | - |
| Primary Drive | O-ring sealed chain | - |
| Transmission / Drive | - | 6 Speed |
| Chassis |
| Frame Type | Diamond | Aluminum perimeter frame |
| Suspension - Front | Telescopic | ø41 mm Upside down fork |
| Suspension - Rear | Monshock | Asymmetric swingarm with monoshock |
| Wheel Travel - Front | 120 mm / 4.7 in. | 110 mm / 4.3 in |
| Wheel Travel - Rear | 120 mm / 4.7 in. | 130 mm / 5.1 in |
| Electronics |
| ECU | - | Magneti Marelli MIU G3, Ø32 mm |
| Wheels & Brakes |
| Brakes - Rear Diameter (mm) | 240 mm | - |
| Brakes - Front Diameter (in.) | 11.7 inches | - |
| Brakes - Rear Diameter (in.) | 9.4 inches | - |
| Brakes - Front Diameter (mm) | 296 mm | - |
| Brakes - Front | Single disc | Single Ø300 mm disc, 4 piston caliper |
| Brakes - Rear | Single disc | Single Ø218 mm disc, 1 piston caliper |
| Rims | U-section 6-spoke cast aluminium | - |
| Tyres - Front | 120/70-ZR17 | 110/80 -17 |
| Tyres - Rear | 160/60-ZR17 | 130/70 -17 |