Harley-Davidson RR350
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ManufacturerHarley-Davidson
Engine347 cc (21.2 cu in) two-stroke air-cooled (later water-cooled) parallel twin engine
 | |
| Manufacturer | Harley-Davidson |
|---|---|
| Production | 1974–1976[3] |
| Engine | 347 cc (21.2 cu in) two-stroke air-cooled (later water-cooled) parallel twin engine |
| Bore / stroke | 68 mm × 50 mm (2.7 in × 2.0 in) |
| Compression ratio | 12.0:1 |
| Power | 70 hp (52 kW) @ 11,400 rpm[4] |
| Torque | 32.3 lb⋅ft (43.8 N⋅m) |
| Transmission | 6-speed, Chain |
| Frame type | Steel tube frame |
| Suspension | 34mm Ceriani telescopic forks, twin Girling rear |
| Brakes | Drum brakes: 230mm Ceriani 4-leading shoe (front), 230mm Ceriani twin leading shoe (rear) |
| Wheelbase | 1,250 mm (49 in) |
| Weight | 108–112 kg (238–247 lb) (dry) |
| Fuel capacity | 19 L (4.2 imp gal; 5.0 US gal) |
The Harley-Davidson RR350, also known as the Harley-Davidson 350RR, was a racing motorcycle, designed, developed, and built by Harley-Davidson, conforming to the 350cc class regulations of the Grand Prix motorcycle racing world championship, between 1974 and 1976.[5][6][7]