Comparison of Aprilia RS 125 2011 and Derbi Sonar 125 4T 2012 [S]ave
| Attribute |  Derbi Sonar 125 4T 2012 × |  Aprilia RS 125 2011 × |
|---|---|---|
| General | ||
| Production from (year) | 2012 | 2011 |
| Make | Derbi | Aprilia |
| Model | Derbi Sonar 125 4T | Aprilia RS 125 |
| Category | Scooter | Sport |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Fuel system | Carburettor | Carburettor. DellOrto VHST 28. |
| Engine details | - | Aluminium cylinder with Nikasil coated liner. Read valve intake. |
| Displacement (cm³) | 124 | 124.8 |
| Power (kw) | 7.7 | - |
| Cooling system | Air | Liquid |
| Transmission type,final drive | Belt | Chain |
| Torque (Nm) | 9.6 | - |
| Bore (mm) | 57 | 54 |
| Stroke (mm) | 48.6 | 54.5 |
| Gearbox | Automatic | 6-speed |
| Emission details | Compartment underthe seat to hold a jet helmet. | - |
| Driveline | Automatic CVT | Primary drive: Gearbox: 63/19 (3.31). Final drive: Chain: 17/40 (2.35). |
| Ignition | - | CDI |
| Clutch | Automatic centrifugal | Multi-plate in oil bath. |
| Lubrication system | Mechanical oil pump | Separate mixing with variable displacement, volumetric pump. |
| Compression | 10.6:1 | 12.5:1 |
| Chassis | ||
| Front suspension | Hydraulic fork | Upside down hydraulic fork, Ø 40 mm. Wheel travel 120 mm. |
| Rear suspension | Single shock absorber | Swingarm with asymmetric members in thin wall box section cast aluminium. Hydraulic monoshock with adjustable spring preload. Wheel travel 120 mm. |
| Front brakes | Single disc | Single disc |
| Rear brakes | Expanding brake (drum brake) | Single disc |
| Diameter (mm) | 140 | 220 |
| Frame type | - | Sloping twin-spar frame in thin wall box section cast aluminium, with reinforcement cross-ribbing. |
| Front tyre | 90/80-16 | 110/70-17 |
| Rear tyre | 110/80-14 | 150/60-17 |
| Wheels | - | Aluminium alloy. Front 3.00 x 17”; rear 4,00 x 17”. |
| Other | ||
| Starter | Electric | Electric |
| Color options |
|
|
| Dimensions | ||
| Wheelbase (mm) | 1,325 | 1,345 |
| Dry weight (kg) | 99 | - |
| Power/weight ratio | 0.0778 | - |
| Overall length (mm) | 1,930 | 1,955 |
| Overall width (mm) | 740 | 720 |
| Seat height (mm) | 805 | 805 |
| Performance | ||
| Fuel capacity (l) | 6 | 14 |
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