| TECHNICAL SPECIFICATION |
|---|
| Model ID |
|---|
| Manufacturer (Make) | MBK |
| Model Name | Stunt Naked |
| Year | 2009 |
| Category(class) | Scooter |
| Engine |
|---|
| Engine Capacity (Displacement) | 49 ccm (2.99 cubic inches) |
| Engine Type | Single cylinder, two-stroke |
| Bore x Stroke | Ø40.0 mm x 39.2 mm (Ø1.57 inches x 1.54 inches) |
| Bore/Stroke Ratio | 1.02 |
| Compression Ratio | 11.2:1 |
| Ignition | CDI |
| Starter System | Electric & kick |
| Lubrication System | Separate lubrication |
| Cooling System | Air |
| Powertrain |
|---|
| Transmission (Final Drive) | Belt |
| Chassis/Suspension/Brakes |
|---|
| Front Suspension | Telescopic fork |
| Front Suspension Travel | 80 mm (3.15 inches) |
| Rear Suspension | Unit swing |
| Rear Suspension Travel | 60 mm (2.36 inches) |
| Front Brakes | Single disc |
| Front Brakes Diameter | Ø190 mm (Ø7.48 inches) |
| Rear Brakes | Expanding brake (drum brake) |
| Rear Brakes Diameter | Ø110 mm (Ø4.33 inches) |
| Front Tire | 120/80-12 |
| Rear Tire | 130/90-10 |
| Dimensions |
|---|
| Overall Length | 1785 mm (70.28 inches) |
| Overall Width | 711 mm (27.99 inches) |
| Seat Height | 787 mm (30.98 inches) |
| Wheelbase | 1202 mm (47.32 inches) |
| Ground Clearance | 155 mm (6.1 inches) |
| Dry Weight | 267.0 kg (589 lb) |
| Curb Weight | 82.0 kg (181 lb) |
| Fuel Capacity | 5.50 litres (1.45 gallons) |
| Performance |
|---|
| Max Power | 3.62 HP (2.6 kW) at 6800 RPM |
| Max Torque | 4.00 Nm (2.94 ft*lbs) at 5000 RPM |
| Power/Weight Ratio | 0.04 Hp/Kg |
| Top Speed | - |
| Acceleration (dart, speedup) time | |
| 0-100 km/h | - |
| 0-60 mph | - |
| 1/4 mile | - |
| 60 to 140 km/h, highest gear | - |
