| Year | 1987 |
| Bore x Stroke | 89.0 x 79.0 mm |
| Capacity | 491.4 cc / 29.9 cu-in |
| Clutch | Wet plate |
| Compression Ratio | 6.8:1 |
| Cooling System | Liquid cooled |
| Dry Weight | 105.6 kg / 233.0 lbs |
| Engine | Two stroke, single cylinder, membrane & power valve |
| Exhaust | Expansion chamber |
| Final Drive | Chain |
| Final Reduction | 3.500 |
| Frame | Welded steel tubing |
| Front Brakes | 240mm Single disc hydraulic 2 piston caliper |
| Front Suspension | 45mm Showa cartridge fork, compression damping, air pressure |
| Front Tyre | 80/100 -21 |
| Front Wheel Travel | 305 mm / 12.0 in |
| Fuel Capacity | 8.3 Litres / 2.2 US gal |
| Gear Ratio | 1st 1.750 / 2nd 1.388 / 3rd 1.150 / 4th 1.000 / 5th 0.870 |
| Ground Clearance | 315 mm / 12.4 in |
| Ignition | CDI |
| Induction | Single 38mm Keihin flat-slide carburettor |
| Lubrication | Pre-mix |
| Max Power | 64.6 hp / 47.5 kW @ 6000 rpm |
| Max Torque | 72.2 Nm / 53.3 lb-ft @ 6000 rpm |
| Overview | Pulpmx.com |
| Primary Reduction | 2.520 |
| Rake | 27.3° |
| Rear Brakes | 220mm Single disc hydraulic 1 piston caliper |
| Rear Suspension | Showa Prolink with adjustable compression rebound damping |
| Rear Tyre | 110/100 -18 |
| Rear Wheel Travel | 320 mm / 12.6 in |
| Seat Height | 937 mm / 36.8 in |
| Starting | Kick |
| Trail | 114 mm / 4.5 in |
| Transmission | 5 Speed |
| Wet Weight | 112.5 kg / 248.1 lbs |
| Wheelbase | 1508.7 mm / 59.4 in |
