| Attribute | Value |
| General |
| Production from | 2015 year |
| Make | Benelli |
| Model | Benelli BN 251 |
| Category | Naked bike |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | 4 |
| Fuel system | Injection |
| Engine details | Add |
| Displacement | 249.2 cm³ |
| Power | 17.9 kw |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Chain |
| Torque | 21 Nm |
| Bore | 72 mm |
| Stroke | 61.5 mm |
| Gearbox | 6-speed |
| Greenhouse gases | Add |
| Fuel control | Add |
| Emission details | Euro 3 |
| Driveline | Add |
| Ignition | CDI |
| Clutch | Wet clutch |
| Lubrication system | Wet sump |
| Compression | 11.2:1 |
| Exhaust system | Add |
| Chassis |
| Front suspension | Upside-down forks |
| Rear suspension | Rear swing arm with central rear shock absorber |
| Front brakes | Single disc |
| Rear brakes | Single disc |
| Diameter | 220 mm |
| Frame type | Steel trestle |
| Front tyre | 110/70-17 |
| Rear tyre | 140/60-17 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | 120 mm |
| Rear wheel travel | 50 mm |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Electric |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,385 mm |
| Kerb weight | Add |
| Dry weight | 150 kg |
| Power/weight ratio | 0.1193 |
| Overall height | 1,090 mm |
| Overall length | 2,080 mm |
| Overall width | 805 mm |
| Seat height | 780 mm |
| Alternate seat height | Add |
| Ground clearance | 130 mm |
| Front percentage of weight | Add |
| Rear percentage of weight | Add |
| Performance |
| Top speed | Add |
| Acceleration 0-100 km/h | Add |
| Length | Add |
| Reserve fuel capacity | 3.5 l |
| Fuel capacity | 16.5 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |