Attribute | ![]() Aprilia SR Motard 50 2018 × | ![]() Derbi Sonar 125 4T 2011 × |
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General | ||
Production from (year) | 2018 | 2011 |
Make | Aprilia | Derbi |
Model | Aprilia SR Motard 50 | Derbi Sonar 125 4T |
Category | Scooter | Scooter |
Engine and transmission | ||
Engine type | Single cylinder, four-stroke | Single cylinder, four-stroke |
Valves per cylinder | 4 | - |
Fuel system | Carburettor. Keihin NCV F20 | Carburettor |
Displacement (cm³) | 49.4 | 124 |
Power (kw) | 3.3 | 7.7 |
Cooling system | Air | Air |
Transmission type,final drive | Belt | Belt |
Torque (Nm) | 3.8 | 9.6 |
Bore (mm) | 40 | 57 |
Stroke (mm) | 39.3 | 48.6 |
Gearbox | Automatic | Automatic |
Emission details | Euro 2 | Compartment underthe seat to hold a jet helmet. |
Clutch | Automatic centrifugal dry clutch | Automatic centrifugal |
Lubrication system | Wet sump | Mechanical oil pump |
Compression | - | 10.6:1 |
Chassis | ||
Front suspension | Hydraulic telescopic fork with straight stanchions “ wheel travel: 86mm | 32 mm fork. |
Rear suspension | Single arm with engine crankcase as swinging element, served by a single shock “ wheel travel 76mm | Monoshock |
Front brakes | Single disc. Two-piston floating caliper | Single disc |
Rear brakes | Expanding brake (drum brake) | Expanding brake (drum brake) |
Diameter (mm) | 140 | 140 |
Frame type | Single cradle structure in tubular steel with pressed reinforcements | - |
Front tyre | 120/70-14 | 90/80-16 |
Rear tyre | 120/70-14 | 110/80-14 |
Front wheel travel (mm) | 86 | 76 |
Rear wheel travel (mm) | 82 | 64 |
Other | ||
Starter | Electric & kick | Electric |
Color options |
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Dimensions | ||
Wheelbase (mm) | 1,350 | 1,325 |
Dry weight (kg) | 106 | 99 |
Power/weight ratio | 0.0311 | 0.0778 |
Overall length (mm) | 1,953 | 1,930 |
Overall width (mm) | 720 | 740 |
Seat height (mm) | 775 | 805 |
Performance | ||
Reserve fuel capacity (l) | 1.5 | - |
Fuel capacity (l) | 7 | 6 |