Comparison of Aprilia RX 125 2021 and GAS GAS Halley 125 2T [S]ave
| Attribute |  Aprilia RX 125 2021 × |  GAS GAS Halley 125 2T × |
|---|---|---|
| General | ||
| Production from (year) | 2021 | 2010 |
| Make | Aprilia | GAS GAS |
| Model | Aprilia RX 125 | GAS GAS Halley 125 2T |
| Category | Enduro / offroad | Trial |
| Engine and transmission | ||
| Engine type | Single cylinder, four-stroke | Single cylinder, two-stroke |
| Valves per cylinder | 4 | - |
| Fuel system | Injection. Magneti Marelli M3G ø 32mm ECU | Carburettor. 26 mm |
| Displacement (cm³) | 124.2 | 124 |
| Power (kw) | 10.9 | - |
| Fuel consumption (l/100km) | 2.73 | - |
| Cooling system | Liquid | Liquid |
| Transmission type,final drive | Chain | Chain |
| Torque (Nm) | 10.9 | - |
| Bore (mm) | 58 | 54 |
| Stroke (mm) | 47 | 54.5 |
| Gearbox | 6-speed | 6-speed |
| Greenhouse gases | 63.3 CO2 g/km. (CO2 - Carbon dioxide emission) | - |
| 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 | Multi-plate in oil bath. | Multiple disks in oil bath, hydraulic |
| Lubrication system | Wet sump | - |
| Compression | 12.5:1 | - |
| Chassis | ||
| Front suspension | Ø 41 mm telescopic upside down fork | Fork, 41 mm. |
| Rear suspension | High resistance steel swingarm. Hydraulic monoshock absorber with progressive link system. | One-piece aluminium swing arm |
| Front brakes | Single disc. Floating calliper. Front wheel only ABS. | Single disc. Twin piston caliper. |
| Rear brakes | Single disc. Floating calliper | Single disc. Single-piston |
| Diameter (mm) | 220 | 220 |
| Frame type | Steel perimeter | Deltabox*, made with Cromoly tubing. Aluminium swing arm. |
| Front tyre | 90/90-21 | 80/90-21 |
| Rear tyre | 120/80-18 | 110/80-18 |
| Wheels | Aluminium spoked wheel. | - |
| Front wheel travel (mm) | 240 | 255 |
| Rear wheel travel (mm) | 220 | 246 |
| Other | ||
| Starter | Electric | Kick |
| Color options |
|
|
| Dimensions | ||
| Wheelbase (mm) | 1,350 | 1,460 |
| Kerb weight (kg) | 134 | 107 |
| Dry weight (kg) | 124 | 99 |
| Power/weight ratio | 0.0879 | - |
| Seat height (mm) | 905 | 945 |
| Performance | ||
| Fuel capacity (l) | 7.5 | 7.4 |
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