The Cube 300 arrived with the 2008 Cube restyle and used a bored-out 278 cc version of the Quasar single in place of the European 250.
| MODEL | APRILIA SPORTCITY CUBE 300 2009 - 2010 |
| Year | 2009 - 2010 |
| Engine Type | Single cylinder, four-stroke, 4 valves (Piaggio Quasar) |
| Displacement / Capacity | 278.3 cc / 17 cu in |
| Bore X Stroke | 75 x 63 mm / 2.95 x 2.48 in |
| Compression Ratio | 11.5:1 |
| Cooling System | Liquid cooled |
| Max Power | 16.1 kW / 22 hp @ 8000 rpm |
| Max Torque | 22 Nm / 16.2 lb-ft @ 6500 rpm |
| Ignition | Electronic inductive discharge ignition with variable advance |
| Induction | Electronic fuel injection |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | Wet sump, forced circulation with mechanical pump |
| Gear Box | Automatic CVT (variator) |
| Clutch | Automatic centrifugal dry clutch |
| Final Drive | Belt |
| CHASSIS SPECS | |
| Frame | Split single cradle frame in high tensile strength steel tube |
| Front Suspension | 35 mm hydraulic telescopic fork, 100 mm / 3.9 in travel |
| Rear Suspension | Engine unit acting as swingarm, twin hydraulic shock absorbers with adjustable spring preload, 80 mm / 3.1 in travel |
| Front Brakes | 2 x 260 mm discs, floating twin-piston calipers |
| Rear Brakes | Single 220 mm disc |
| DIMENSION SPECS | |
| Overall Length | 1985 mm / 78.1 in |
| Overall Width | 890 mm / 35 in |
| Overall Height | — |
| Seat Height | 815 mm / 32.1 in |
| Wheelbase | 1360 mm / 53.5 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70-15 |
| Rear Tyre | 130/80-15 |
| FUEL SYSTEM | |
| Fuel Capacity | 9 Litres / 2.4 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The Cube 300 arrived with the 2008 Cube restyle and used a bored-out 278 cc version of the Quasar single in place of the European 250. Peak power barely changed, but the extra capacity gave a little more torque for carrying a passenger or holding motorway speeds. Chassis, 15-inch wheels and triple 260/220 mm disc brakes were shared with the Cube 250, as were the new dash, longer tail and larger seat.
