Enfield Thunderbird TwinSpark 2011 specs
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| Displacement | 346.00 ccm (21.11 cubic inches) |
| Engine Type | Roya Enfield Unit Construction Engine, twin sparks |
| Engine Details | Single cylinder, four-stroke |
| Power | 19.80 HP (14.5 kW)) @ 5600 RPM |
| Torque | 28.00 Nm (2.9 kgf-m or 20.7 ft.lbs) @ 4000 RPM |
| Top Speed | 120.0 km/h (74.6 mph) |
| Compression | 7.3:1 |
| Bore X Stroke | 70.0 x 90.0 mm (2.8 x 3.5 inches) |
| Fuel System | Carburettor. UCAL 29mm, Constant Vacuum Carburettor |
| Ignition | Transistorised Coil Ignition |
| Lubrication System | Wet sump |
| Cooling System | Air |
| Gearbox | 5-speed |
| Transmission Type Final Drive | Chain |
| Clutch | Wet mulitiplate |
| Rear Tyre | 3.50-19 |
| Rear Wheel Travel | 80 mm (3.1 inches) |
| Frame Type | Single downtube, using engine as stressed member |
| Front Brakes | Single disc |
| Front Brakes Diameter | 280 mm (11.0 inches) |
| Front Suspension | Telescopic With Hydraulic Damping. |
| Front Tyre | 3.25-19 |
| Front Wheel Travel | 130 mm (5.1 inches) |
| Rear Brakes | Expanding brake (drum brake) |
| Rear Brakes Diameter | 153 mm (6.0 inches) |
| Rear Suspension | Swing arm With Gas Shock Absorbers. |
| Seat | Dual seat |
| Dry Weight | 163.0 kg (359.4 pounds) |
| Fuel Capacity | 14.50 litres (3.83 gallons) |
| Ground Clearance | 135 mm (5.3 inches) |
| Overall Height | 1,080 mm (42.5 inches) |
| Overall Length | 2,120 mm (83.5 inches) |
| Overall Width | 780 mm (30.7 inches) |
| Power Weight Ratio | 0.1215 HP/kg |
| Weight Incl Oil Gas Etc | 187.0 kg (412.3 pounds) |
| Color Options | Black, Red, Silver |
| Comments | Royal Enfield bikes are made in India. |
| Starter | Electric |
| Electrical | 12V |
| Light | 35W/35W Halogen headlamp |
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