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Ralt RT 1-BMW
| Tuner | |
| Country | GB/D |
| Year | 1977 |
| Engine | BMW M12 |
| Engine Type | L4 |
| Cams | 2 |
| Valves/cyl | 4.0000 |
| Compression | "11,4" |
| Bore | 89.200 |
| Stroke | 80.000 |
| Capacity (cc) | 1998 |
| Power (at revs) | 305 HP/9600 |
| Torque | 245 Nm/8000 |
| Induction | |
| Ignition | Bosch |
| Fuel system | Kugelfischer f.i. |
| Chassis type | Aluminium monocoque |
| Body type | single seater |
| Designer | R. Tauranac |
| Front suspension | "coil, double wishbone" |
| Rear suspension | "coil, wishbone and links" |
| Shock absorbers | Koni |
| Engine position | mid |
| Wheelbase (mm) | 2438 |
| Front track (mm) | 1282 |
| Rear track (mm) | 1397 |
| Weight (kg) | 505 |
| Drive | rear |
| Number of gears | 5 |
| Gearbox | Hewland FGA 300 |
| Fuel tank size (litres) | |
| Brakes | |
| Front brake type | disc |
| Rear brake type | disc |
| Front rims | 10 x13 |
| Rear rims | 15 x 13 |
| Tyres | Goodyear |
| Front tyres | 9.2/20.0-13 |
| Rear tyres | 12.2/23.0-13 |
| Maximum speed (kph) | |
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