| MODEL | GILERA 300 EXTRA 1964 - 1968 |
| Year | 1964 - 1968 |
| Engine Type | Four stroke, single cylinder, 2 valves |
| Displacement / Capacity | 300 cc |
| Bore X Stroke | 60 x 54 mm |
| Compression Ratio | 7.8:1 |
| Cooling System | Air cooled |
| Max Power | 10.9 kW / 15 hp @ 8000 rpm |
| Max Torque | — |
| Ignition | 6 Volt |
| Induction | Carburetor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 4 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Double cradle |
| Front Suspension | Hydraulic telescopic forks |
| Rear Suspension | Dual shock absorbers |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 161 kg / 355 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 3.00-17 |
| Rear Tyre | 3.25-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 19 Litres / 5.0 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The 300 Extra was the largest and most powerful of Gilera's 1960s road singles in this group. It used a double-cradle frame and a larger tank, suiting longer touring rides.
