| Year | 1977 |
| Bore x Stroke | 71.8 x 43.2 mm |
| Capacity | 349.6cc / 21.3 cu un |
| Clutch | Wet, multiplate |
| Compression Ratio | 9.6:1 |
| Cooling System | Air cooled |
| Dimensions | Length: 2050 mm / 80.7 in Width: 710 mm / 28.0 in Height: 1060 mm / 41.7 in |
| Dry Weight | 181 kg / 399 lbs |
| Engine | Four stroke, parallel twin cylinder, SOHC, 2 valve per cylinder |
| Final Drive | Chain |
| Final Drive Ratio | 2.923 (13/38) |
| Frame | Double downtube, tubular steel |
| Front Brakes | 2 x 256 mm Brembo discs |
| Front Suspension | 35mm Paioli fork |
| Front Tyre | 3.25-18 |
| Fuel Capacity | 12 Litres / 3.17 US gal |
| Gear Ratios | 1st 2.500 / 2nd 1.714 / 3rd 1.333 / 4th 1.074 / 5th 1.900:1 |
| Ignition | Points and coil, 12V 150W generator |
| Induction | Dell'Orto VHB 26 FS/FD carburetor |
| Max Power | 19 kW / 26 hp @ 8000 rpm |
| Rear Brakes | Single 257 mm Brembo disc |
| Rear Suspension | Swingarm, dual Marzocchi shocks, 3-way adjustable |
| Rear Tyre | 3.50-18 |
| Seat Height | 760 mm / 29.9 in |
| Spark Plug | Champion L81 |
| Starting | Electric |
| Top Speed | 148 km/h / 92 mph |
| Transmission | 5 Speed |
| Wheelbase | 1400 mm / 55.1 in |
