Suzuki DR 650 R/S (1991)

The Suzuki DR 650R/S is a motorcycle from 1991 with a 640cc four-stroke single cylinder engine, air/oil cooling, SOHC, and 4 valves per cylinder. It has a 40mm flat side BST40 Mikuni induction system, digital ignition, and a kick start. The maximum power output is 32.8 kW at 6800 rpm, while max torque is 57 Nm at 5000 rpm. The transmission is 5-speed, and the final drive is a chain. The front suspension is a telescopic fork, and the rear suspension is a full floater swingarm with a single shock and gas/oil damping. The front and rear brakes are single 280mm and 230mm discs with 2-piston calipers, respectively. The dimensions are 2385mm in length, 870mm in width, and 1330mm in height. The seat height is 890mm, and the dry weight is 155kg. The fuel capacity is 21 litres, and the average consumption is 5.05 L/100 km. The braking distance from 60 km/h to 0 is 14.2m, while from 100 km/h to 0 is 42.0m. The standing quarter-mile time is 13.9 seconds, and the top speed is 162.7 km/h. The motorcycle was tested in a group test conducted by Motosprint in 1990.

Technical specifications:

Make Model: Suzuki DR 650R / S

Year: 1991
Engine: Air/oil cooled, four stroke, single cylinder. SOHC, 4 Valve per cylinder.
Capacity: 640 cc / 39 cu in
Bore x Stroke: 95 x 90.4 mm
Compression Ratio: 9.7:1
Induction: 40 mm Flat side BST40 Mikuni
Ignition: Digital
Starting: Kick
Max Power: 32.8 kW / 45 hp @ 6800 rpm (at rear wheel 30.6 kW / 41.1hp @ 6500 rpm )
Max Torque: 57 Nm / 5.1 kgf-m / 42.0 lb-ft @ 5000 rpm
Transmission: 5 Speed
Final Drive: Chain
Front Suspension: Telescopic fork
Rear Suspension: Full Floater swingarm, single shock, gas/oil damped
Front Brakes: Single 280mm disc, 2 piston caliper
Rear Brakes: Single 230mm disc, 2 piston calipers
Front Tyre: 90/90-21
Rear Tyre: 120/90-17
Dimensions: Length: 2385 mm / 93.9 in Width: 870 mm / 34.3 in Height: 1330 mm / 52.4 in
Wheelbase: 1510 mm / 59.5 in
Seat Height: 890 mm / 34.8 in
Dry Weight: 155 kg / 342lbs
Wet Weight: 168 kg / 370 lbs
Fuel Capacity: 21 Litres / 5.5 US gal / 4.6 Imp gal
Consumption average: 5.05 L/100 km / 19.8 km/l / 46.6 US mpg / 55.9 Imp mpg
Braking 60 km/h – 0: 14.2 m / 46.6 ft
Braking 100 km/h – 0: 42.0 m / 137.8 ft
Standing 1/4 Mile: 13.9 sec / 143.2 km/h / 89.0 mph
Top Speed: 162.7 km/h / 101 mph
Road Test: Motosprint Group Test 1990