| Year | 1970 |
| Bore x Stroke | 63 x 56 mm |
| Capacity | 349 cc / 21.3 cu-in |
| Clutch | Wet multiple plate clutch |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled |
| Dimensions | Length: 1960 mm / 77.1 in Width: 620 mm / 24.4 in |
| Engine | Four stroke, 20° inclination parallel twin cylinder, OHV engine with rocker support |
| Final Drive | Chain |
| Frame | Single beam tubular and pressed steel |
| Front Brakes | 200mm Drum |
| Front Suspension | Telescopic hydraulic fork |
| Front Tyre | 2.75-18 |
| Fuel Capacity | 13 Litres / 3.7 US gal |
| Ignition | Dynamo |
| Induction | 2x 24mm Dell'Orto carburetors |
| Lubrication | Wet sump |
| Max Power | 27 hp / 20.1 kW @ 7600 rpm |
| Rear Brakes | 200mm Drum |
| Rear Suspension | Swinging arm fork with adjustable hydraulic shock absorbers |
| Rear Tyre | 3.25-18 |
| Related Links | Style Council.zip - 406 KStreet Bike No. 21 / motociclismo1.pdf - 1538 K / 350S Road Test Two Wheels October 1972.pdf / 350 Twin.zip - 177 K |
| Starting | Kick |
| Transmission | 5 Speed |
| Weight | 149 kg / 328.5 lbs |
| Wheelbase | 1300 mm / 51.1 in |
