| Year | 1980 |
| Battery | Yuasa 12V 14Ah |
| Bore x Stroke | 74 x 58 mm |
| Capacity | 499 cc / 30.45 cu in |
| Clutch | Wet, multi-plate |
| Compression Ratio | 9.5:1 |
| Dimensions | Length: 2150 mm / 84.6 in Width: 670 mm / 26.4 in Height: 1160 mm / 45.7 in |
| Dry Weight | 180 kg / 397 lbs |
| Engine | Four stroke, 90°“L”twin cylinder, SOHC, desmodromic, 2 valves per cylinder, belt driven |
| Final Drive | Chain |
| Final Drive Ratio | 2.533:1 (15/38). From 1981: 2.786:1 (14/39) |
| Frame | Tubular steel trellis frame |
| Front Brakes | 2 x 260mm Discs, 2 piston calipers |
| Front Suspension | 35mm Marzocchi or Paioli fork |
| Front Tyre | 100/90-18 |
| Fuel Capacity | 18 L / 4.8 US gal / 4.0 Imp gal |
| Gear Ratios | 1 st 2.500 / 2nd 1.714 / 3rd 1.333 / 4th 1.074 / 5th 0.900:1 (from 1981: 0.931:1) |
| Ignition | Bosch PTZ Electronic |
| Induction | 2x Dell'Orto PHM 36 mm carburetors. |
| Max Power | 33.1 kW / 45 hp @ 9050 rpm |
| Primary Drive Ratio | 2.226:1 (31/69) |
| Rear Brakes | Single 260 mm disc, 1 piston caliper |
| Rear Suspension | Marzocchi or Paioli dual shock absorbers with 3-way adjustable coil springs |
| Rear Tyre | 110/90-18 |
| Road Test | Bike Magazine |
| Seat Height | 760 mm / 29.9 in |
| Starting | Electric |
| Top Speed | 196 km/h / 121.8 mph |
| Transmission | 5 Speed |
| Wheelbase | 1450 mm / 57.1 in |
