Comparison of Aprilia RS 125 2020 and Aprilia RS4 125 Replica 2018 [S]ave
| Attribute |  Aprilia RS4 125 Replica 2018 × |  Aprilia RS 125 2020 × |
|---|---|---|
| General | ||
| Production from (year) | 2018 | 2020 |
| Make | Aprilia | Aprilia |
| Model | Aprilia RS4 125 Replica | Aprilia RS 125 |
| Category | Sport | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
| Valves per cylinder | 4 | - |
| Fuel system | Injection. Magneti Marelli M3G ø 32mm ECU | Carburettor. Magneti Marelli M3G ø 32mm ECU |
| Engine details | - | Read valve intake. |
| Displacement (cm³) | 124.8 | 124.2 |
| Power (kw) | 10.9 | 20.6 |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Torque (Nm) | 10.9 | - |
| Bore (mm) | 58 | 58 |
| Stroke (mm) | 47 | 47 |
| Gearbox | 6-speed | 6-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | Double Overhead Cams/Twin Cam (DOHC) |
| Emission details | Euro 3 | Euro 4 |
| Driveline | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). |
| Ignition | Electronic with CDI capacity discharge | Electronic with CDI capacity discharge |
| Clutch | Multi-plate in oil bath. | Multi-plate in oil bath. |
| Lubrication system | Wet sump | Separate mixing with variable displacement, volumetric pump. |
| Compression | 12.5:1 | 12.5:1 |
| Chassis | ||
| Front suspension | Upside down hydraulic fork | Upside down hydraulic fork, 41 mm. |
| Rear suspension | Asymetric swingarm. Hydraulic monoshock with adjustable spring preload. | Swingarm. Hydraulic monoshock with adjustable spring preload. |
| Front brakes | Single disc. Stainless steel disc with radial 4 piston calliper | Single disc |
| Rear brakes | Single disc. Single 30 mm piston | Single disc |
| Diameter (mm) | 218 | 218 |
| Frame type | Aluminium perimeter | Sloping twin-spar frame in thin wall box section cast aluminium, with reinforcement cross-ribbing. |
| Front tyre | 110/80-R17 | 100/80-R17 |
| Rear tyre | 130/70-R17 | 130/70-R17 |
| Wheels | Light alloy with 6 split spokes | Aluminium alloy rims |
| Front wheel travel (mm) | 110 | 110 |
| Rear wheel travel (mm) | 130 | 120 |
| Other | ||
| Starter | Electric | Electric |
| Color options |
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| Dimensions | ||
| Wheelbase (mm) | 1,350 | 1,353 |
| Kerb weight (kg) | 120 | - |
| Overall height (mm) | 1,135 | 1,135 |
| Overall length (mm) | 1,968 | 1,968 |
| Overall width (mm) | 760 | 760 |
| Seat height (mm) | 820 | 820 |
| Performance | ||
| Reserve fuel capacity (l) | 3.3 | 3.5 |
| Fuel capacity (l) | 14.5 | 14.5 |
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