| Attribute | Value |
| General |
| Production from | 2009 year |
| Make | Gilera |
| Model | Gilera Nexus 300 Simoncelli |
| Category | Scooter |
| Engine and transmission |
| Engine type | Single cylinder, four-stroke |
| Valves per cylinder | Add |
| Fuel system | Injection |
| Engine details | Add |
| Displacement | 292 cm³ |
| Power | 16.4 kw |
| Max RPM | Add |
| Fuel consumption | Add |
| Cooling system | Liquid |
| Transmission type,final drive | Belt |
| Torque | 23 Nm |
| Bore | 75 mm |
| Stroke | 63 mm |
| Gearbox | Automatic |
| Greenhouse gases | Add |
| Fuel control | Add |
| Emission details | Add |
| Driveline | Add |
| Ignition | Electronic inductive discharge |
| Clutch | Dry centrifugal type |
| Lubrication system | Add |
| Compression | Add |
| Exhaust system | Closed loop system with lambda sensor and three-way catalytic converter in exhaust pipe |
| Chassis |
| Front suspension | Telescopic hydraulic fork |
| Rear suspension | Double hydraulic shock absorber with four-position spring preload |
| Front brakes | Single disc. Stainless steel disk, two-piston floating caliper |
| Rear brakes | Single disc. Stainless steel disk, caliper with two opposite pistons |
| Diameter | 240 mm |
| Frame type | Double cradle trellis made of high-strength steel tubes |
| Front tyre | 120/70-15 |
| Rear tyre | 140/60-14 |
| Seat | Add |
| Wheels | Add |
| Front wheel travel | 94 mm |
| Rear wheel travel | 76 mm |
| Trail | Add |
| Rake (fork angle) | Add |
| Other |
| Battery capacity | Add |
| Starter | Add |
| Color options | |
| Carrying capacity | Add |
| Light | Add |
| Instruments | Add |
| Electrical Voltage | Add |
| Dimensions |
| Wheelbase | 1,530 mm |
| Kerb weight | Add |
| Dry weight | 174 kg |
| Power/weight ratio | 0.0943 |
| Overall height | Add |
| Overall length | 2,100 mm |
| Overall width | 780 mm |
| Seat height | 815 mm |
| Alternate seat height | Add |
| Ground clearance | Add |
| 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 | Add |
| Fuel capacity | 15 l |
| Oil capacity | Add |
| Width | Add |
| Height | Add |