| MODEL | SUZUKI DR 650RS 1990 |
| Year | 1990 |
| Engine Type | Air/oil cooled, four stroke, single cylinder, SOHC, 4 valves per cylinder |
| Displacement / Capacity | 640 cc / 39 cu in |
| Bore X Stroke | 95 x 90.4 mm |
| Compression Ratio | 9.7:1 |
| Cooling System | Air/oil cooled |
| Max Power | 32.8 kW / 45 hp @ 6800 rpm (at rear wheel 30.6 kW / 41.1 hp @ 6500 rpm) |
| Max Torque | 57 Nm / 5.1 kgf-m / 42.0 lb-ft @ 5000 rpm |
| Ignition | Digital |
| Induction | 40 mm flat side BST40 Mikuni |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | Telescopic fork |
| Rear Suspension | Full Floater swingarm, single shock, gas/oil damped |
| Front Brakes | Single 280 mm disc, 2 piston caliper |
| Rear Brakes | Single 230 mm disc, 2 piston calipers |
| DIMENSION SPECS | |
| Overall Length | 2385 mm / 93.9 in |
| Overall Width | 870 mm / 34.3 in |
| Overall Height | 1330 mm / 52.4 in |
| Seat Height | 890 mm / 34.8 in |
| Wheelbase | 1510 mm / 59.5 in |
| Ground Clearance | — |
| Dry Weight | 155 kg / 342 lb |
| Wet Weight | 168 kg / 370 lb |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 120/90-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 21 Litres / 5.5 US gal / 4.6 Imp gal |
| Fuel Consumption | 5.05 L/100 km / 19.8 km/l / 46.6 US mpg / 55.9 Imp mpg |
| Top Speed | 162.7 km/h / 101 mph |
The RS was the lighter, road-biased sibling of the 1990 DR650 launch pair, sharing the same 640 cc air/oil-cooled single and chassis as the R/S. It was distinguished by a smaller exhaust system and a more street-oriented feel than the Djebel-style R/S. Like its sibling it had a kick starter and a 21-litre tank.
