Comparison of Aprilia RS 125 2021 and Derbi GPR 50 Racing 2009 [S]ave
| Attribute |  Aprilia RS 125 2021 × |  Derbi GPR 50 Racing 2009 × |
|---|---|---|
| General | ||
| Production from (year) | 2021 | 2009 |
| Make | Aprilia | Derbi |
| Model | Aprilia RS 125 | Derbi GPR 50 Racing |
| Category | Sport | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Valves per cylinder | 4 | - |
| Fuel system | Carburettor. Magneti Marelli M3G ø 32mm ECU | Carburettor |
| Displacement (cm³) | 124.2 | 49 |
| Power (kw) | 20.6 | - |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Bore (mm) | 58 | 39.9 |
| Stroke (mm) | 47 | 40 |
| Gearbox | 6-speed | 6-speed |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) | - |
| Emission details | Euro 4 | - |
| Driveline | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). | - |
| Ignition | Electronic with CDI capacity discharge | - |
| Clutch | Multiple discs, in oil bath | Multi-disc |
| Lubrication system | Wet sump | - |
| Compression | 12.5:1 | 11.5:1 |
| Chassis | ||
| Front suspension | Upside down hydraulic fork, 41 mm. | 40 mm upside-down fork. |
| Rear suspension | Swingarm. Hydraulic monoshock with adjustable spring preload. | Monoshock. |
| Front brakes | Single disc. ABS. Stainless steel disc with radial 4 piston calliper | Single disc |
| Rear brakes | Single disc. Stainless steel disc and calliper with single 30 mm piston. | Single disc |
| Diameter (mm) | 218 | 180 |
| Frame type | Aluminium perimeter | - |
| Front tyre | 100/80-R17 | 100/80-17 |
| Rear tyre | 130/70-R17 | 130/70-17 |
| Wheels | Aluminium alloy rims | - |
| Front wheel travel (mm) | 110 | 110 |
| Rear wheel travel (mm) | 120 | 110 |
| Other | ||
| Starter | Electric | Electric |
| Color options |
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|
| Dimensions | ||
| Wheelbase (mm) | 1,353 | 1,310 |
| Overall height (mm) | 1,135 | 1,116 |
| Overall length (mm) | 1,968 | 1,961 |
| Overall width (mm) | 760 | 720 |
| Seat height (mm) | 820 | 845 |
| Performance | ||
| Reserve fuel capacity (l) | 3.5 | - |
| Fuel capacity (l) | 14.5 | 13 |
| Oil capacity (l) | - | 1.5 |
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