| Year | 1977 |
| Bore x Stroke | 64 x 54 mm |
| Capacity | 173 cc / 10.6 cu-in |
| Clutch | Wet multiplate |
| Compression Ratio | 9.3:1 |
| Cooling System | Air cooled |
| Engine | Four stroke, single cylinder, OHC, 2 valve |
| Final Drive | Chain |
| Frame | Single downtube, full cradle frame, centre-axle fork, swingarm suspension |
| Front Brakes | 110mm drum |
| Front Suspension | 38mm Showa air assisted forks |
| Front Tyre | 2.75 x 21 |
| Front Wheel Travel | 200 mm / 7.8 in |
| Fuel Capacity | 7 Litres / 1.8 US gal |
| Ground Clearance | 180 mm / 7.5 in |
| Ignition | Inductive, breaker-points, battery-powered |
| Induction | Single 26mm Keihin |
| Lubrication | Wet wimp |
| Max Power | 14hp / 10.2 kW @ 9500 rpm |
| Max Torque | 11.6 Nm / 8.62 @ 8000 rpm |
| Rake | 29.5° |
| Rear Brakes | 110mm drum |
| Rear Suspension | Showa Pro-Link shocks |
| Rear Tyre | 3.50 x 18 |
| Rear Wheel Travel | 165 mm / 6.5in |
| Seat Height | 800 mm / 31.5 in |
| Starting | Kick |
| Trail | 132 mm / 5.2 in |
| Transmission | 5 Speed |
| Wet Weight | 120 kg / 264 lbs |
| Wheelbase | 1360 mm / 53.5 in |
