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Engine and transmission
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| Engine type: | 4 cylinders, V4 |
| Displacement: | 1851 cc (113.1 cubic inches) |
| Bore × stroke: | 3.94 inch × 4.65 inch (undersquare - longstroke) |
| Cooling system: | Air cooled |
| Throttle: | Cable operated |
| Valves | |
| Valve train: | OHV, non-variable |
| Valves per cylinder: | 4 |
| Fuel and ignition | |
| Sparks per cylinder: | 1 |
| Fuel supply system: | Fuel injection |
| Ignition type: | TCI (Transistor Controlled Ignition) |
| Compression: | 9.5:1 |
| Engine mounting: | Transverse |
| Lubrication system: | Wet sump |
| Gear box: | Manual 5-speed |
| Clutch: | multiple discs, hydraulic operated |
| Final drive: | Belt |
| Starter: | Electric |
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Dimensions
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| Physical measures | |
| Length: | 101.2 inch |
| Width: | 36.4 inch |
| Wheel base: | 70.9 inch |
| Ground clearance: | 5.79 inch |
| Seat height: | 27.4 inch |
| Weight | |
| Curb weight: | 729.7 lbs |
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Chassis and suspension
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| Frame type: | steel, Double cradle frame |
| Front | |
| Suspension: | Cartridge |
| Suspension travel: | 5.12 inch |
| Brake: | Twin Disk, Ø11.73 inch |
| Tire: | 120 / 70 R21 |
| Tire pressure: | 0.17 PSI, with pillion: 0.17 PSI withpilion |
| Rear | |
| Suspension travel: | 3.5 inch |
| Brake: | Disk, Ø12.2 inch |
| Tire: | 210 / 40 R18 |
| Tire pressure: | 0.17 PSI, with pillion: 0.17 PSI withpilion |
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Other
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| ABS available: | No |
| Fuel capacity: | 4.2 gals |
| Number of riders: | 2 persons |
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2003 Triumph Rocket III Concept Water cooled, 2294cc, Inline-3, DOHC |
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Water cooled, 805cc, 45° V-twin, SOHC |
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Air cooled, 1602cc, 48° V-twin, OHV |
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Air cooled, 1721cc, 45° V-twin |