| Attribute | Value |
| General |
| Production from | 1960 year |
| Make | Ariel |
| Model | Ariel Leader |
| Category | Touring |
| Engine and transmission |
| Engine type | Twin, two-stroke |
| Valves per cylinder | Add |
| Fuel system | Carburettor |
| Engine details | Add |
| Displacement | 249 cm³ |
| Power | 12.4 kw |
| Max RPM | Add |
| Fuel consumption | 2.94 l/100km |
| Cooling system | Air |
| Transmission type,final drive | Chain |
| Torque | Add |
| Bore | 54 mm |
| Stroke | 54 mm |
| Gearbox | 4-speed |
| Greenhouse gases | 68.2 CO2 g/km. (CO2 - Carbon dioxide emission) |
| Fuel control | Overhead Valves (OHV) |
| Emission details | Add |
| Driveline | Burman gearbox |
| Ignition | Add |
| Clutch | Add |
| Lubrication system | Add |
| Compression | Add |
| Exhaust system | Add |
| Chassis |
| Front suspension | Trailing link oil-damped |
| Rear suspension | Swingarm |
| Front brakes | Expanding brake (drum brake) |
| Rear brakes | Expanding brake (drum brake) |
| Diameter | 152 mm |
| Frame type | Backbone, steel |
| Front tyre | 3.25-16 |
| Rear tyre | 3.25-16 |
| Seat | Dual seat |
| Wheels | Add |
| Front wheel travel | Add |
| Rear wheel travel | Add |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Kick |
| Color options | |
| Carrying capacity | Saddle bags |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,295 mm |
| Kerb weight | Add |
| Dry weight | 150 kg |
| Power/weight ratio | 0.0827 |
| Overall height | Add |
| Overall length | Add |
| Overall width | Add |
| Seat height | 762 mm |
| Alternate seat height | Add |
| Ground clearance | Add |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | 112 km/h |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | Add |
| Fuel capacity | 9 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |