Attribute | ![]() Derbi GPR 125 2017 × | ![]() Aprilia RS4 125 2015 × |
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General | ||
Production from (year) | 2017 | 2015 |
Make | Derbi | Aprilia |
Model | Derbi GPR 125 | Aprilia RS4 125 |
Category | Sport | Sport |
Engine and transmission | ||
Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
Valves per cylinder | 4 | 4 |
Fuel system | Carburettor. 30 mm | Injection |
Displacement (cm³) | 124.8 | 124.8 |
Power (kw) | 10.9 | 10.9 |
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) | - |
Emission details | Euro 3 | - |
Driveline | - | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). |
Ignition | CDI | Electronic with CDI capacity discharge |
Clutch | Multi-plate | Multi-plate in oil bath. |
Lubrication system | Mechanical oil pump | Wet sump |
Compression | 12.0:1 | 12.5:1 |
Chassis | ||
Front suspension | 40 mm upside-down fork | Upside down hydraulic fork, 40 mm. |
Rear suspension | Monoshock. | Swingarm. Hydraulic monoshock with adjustable spring preload. |
Front brakes | Single disc. Radial caliper | Single disc. Stainless steel disc with radial 4 piston calliper |
Rear brakes | Expanding brake (drum brake). Floating caliper | Single disc. Single 30 mm piston |
Diameter (mm) | 218 | 220 |
Frame type | Alluminium | Aluminium perimeter frame |
Front tyre | 110/80-17 | 110/80-R17 |
Rear tyre | 130/70-17 | 130/70-R17 |
Wheels | - | Light alloy with 6 split spokes |
Front wheel travel (mm) | 110 | 110 |
Rear wheel travel (mm) | 120 | 122 |
Other | ||
Starter | Electric | Electric |
Color options |
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Instruments | Multifunction instrument panel with LCD display inspired by MotoGP. | - |
Dimensions | ||
Wheelbase (mm) | 1,355 | 1,350 |
Kerb weight (kg) | 137 | 120 |
Dry weight (kg) | 120 | - |
Power/weight ratio | 0.0908 | - |
Overall length (mm) | 1,977 | 1,955 |
Overall width (mm) | 795 | 740 |
Seat height (mm) | 800 | 820 |
Performance | ||
Reserve fuel capacity (l) | - | 3.5 |
Fuel capacity (l) | 14 | 14.5 |