The BSA/Triumph Rocket III motorcycle was produced between 1968 and 1975, with a total of 27,480 units made. It featured a four-stroke, transverse, inline triple engine with a capacity of 740cc and a compression ratio of 9.5:1. The bike had a dry sump lubrication system, a 12V battery, and a kick start. It could produce a maximum power output of 44 kW or 60 hp at 7250 rpm, and a maximum torque of 61 Nm or 45 ft/lb at 6900 rpm. The transmission was a 4-speed, with final drive via chain. The bike had a double loop cradle frame, telescopic forks with a coil spring and hydraulic damping in front, and a coil spring/hydraulically damped rear suspension. Prior to 1971, the front brake was a drum, but from 1972-75 it was a disc. The wheels were steel with wire spokes and both front and rear tires were 4.10 x 19 in. The bike weighed 206 kg or 455 lbs in dry weight and had a fuel capacity of 19 L or 5.0 US gal. It could reach a top speed of 185 km/h or 115 mph and had an acceleration of 0-100 km/h or 0-60 mph in 5.5 or 5.2 seconds, respectively. It was available in a ruby red/silver color scheme.
Technical specifications:
Make Model: BSA/Triumph Rocket III
| Year | 1968 – 75 |
|---|---|
| Production | 27 480 units |
| Engine | Four stroke, transverse, inline triple, OHV, 2 valve per cylinder |
| Capacity | 740cc / 45.2 cub in. |
| Bore x Stroke | 67 x 70mm |
| Carburetor | 3 x Amal 26 mm concentric |
| Cooling System | Air cooled |
| Compression Ratio | 9.5:1 |
| Lubrication | Dry sump |
| Oil Capacity | 2.8 L / 6 US pints |
| Exhaust | 3-into-2, stainless steel |
| Ignition | Twin coil |
| Spark Plug | Champion N4 |
| Battery | 12V |
| Starting | Kick start |
| Max Power | 44 kW / 60 hp @ 7250 rpm |
| Max Torque | 61 Nm / 6.2 kgf-m / 45 ft/lb @ 6900 rpm |
| Clutch | Dry single plate |
| Transmission | 4 Speed |
| Final Drive | Chain |
| Frame | Double loop cradle frame |
| Front Suspension | Telescopic forks with coil spring – hydraulically damped |
| Rear Suspension | Coil spring/hydraulically damped |
| Front Brakes | Prior 1971: Drum 1972 – 75: Disc |
| Rear Brakes | Prior 1975: Drum 1975: Disc |
| Wheels | Steel, wire spokes |
| Front Tyre | 4.10 x 19 in., K81 |
| Rear Tyre | 4.10 x 19 in., K81 |
| Wheelbase | 1430 mm / 56.3in. |
| Ground Clearance | 178 mm / 7.0 in. |
| Dry Weight | 206 kg / 455 lbs |
| Wet Weight | 226 kg / 498 lbs |
| Fuel Capacity | 19 L / 5.0 US gal |
| Top Speed | 185 km/h / 115 mph |
| Acceleration | 0 – 100 km/h 0 – 60 mph: 5.5 sec 5.2 sec |
| Colours | Ruby red/silver |
