| Year | 1963 |
| Bore x Stroke | 71 x 82 mm |
| Capacity | 649 cc / 40.0 cu in |
| Clutch | Wet, multiplate |
| Compression Ratio | 8.5:1 |
| Cooling System | Air cooled |
| Dry Weight | 165 kg / 363 lbs |
| Engine | Four stroke, vertical twin, OHV |
| Exhaust | Two-into-two |
| Final Drive | Chain |
| Frame | Brazed lug |
| Front Brakes | SLS drum, 8 in |
| Front Suspension | Telescopic fork, 2 way hydraulic damping |
| Front Wheel | 3.25 x 19 |
| Gear Ratios | 1st 11.80:1 / 2nd 8.17:1 / 3rd 6.76:1 / 4th 5.84:1 |
| Ground Clearance | 127 mm / 5.0 in |
| Induction | Amal Monobloc |
| Max Power | 31 kW / 42 hp @ 6500 rpm |
| Rear Brakes | SLS drum, 7 in |
| Rear Suspension | Swingarm, 2 hydraulic dampers |
| Rear Wheel | 4.00 x 18 |
| Seat Height | 825.5 mm / 32.5 in |
| Source | Classic Britishs |
| Starting | Kick |
| Transmission | 4-Speed constant mesh |
| Wheelbase | 1384 mm / 54.5 in |
