Start of Production

1983

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End of Production

1989

Numbers Produced

22,335

Price

15,600 DM

Engine


Motor Type

Four-stroke horizontal four cylinder in-line engine, liquid cooled

Bore x Stroke

67 x 70 mm (2.63 x 2.75 in)

Displacement

987 cc

Max Power

90 hp (66 KW) at 8,000 rpm

Max Torque

86 Nm / 63.42 ft lb at 6,000 rpm

Compression Ratio

10.2 : 1

Valves Per Cylinder

2

Valve Control

DOHC, using drive chain and cup tappets

Carburation System

Electronic injection, Bosch LE-Jetronic

Engine Lubricating System

Wet sump

Unleaded Fuel From Chassis Number (UK)

0 024 999



Power Transmission


Clutch

Dry single plate

Number of Gears

5

Gear Selection

Dog type gearbox (ratchet foot lever)

Gearbox Ratios

4.50 / 2.96 / 2.30 / 1.88 / 1.61 : 1

Rear Wheel Ratio

1 : 2.91

Bevel/Crownwheel

11 / 32 teeth



Electrical System


Ignition System

Electronic ignition, Bosch LE-Jetronic

Alternator

12 V 460 W

Starter

0.7 Kw

Spark Plugs

Bosch XR 5 DC / Beru 12-5 DU / Champion A 85 YC






Chassis


Type of Frame

Tubular space frame, engine serving as load bearing component

Front wheel suspension

Telescopic fork with hydraulic shock absorber

Rear wheel suspension

BMW Monolever swinging arm

Spring Travel Front/Rear

185 / 110 mm (7.28 x 4.33 in)

Wheel Rims, Front

2.50 x 18 MT H 2

Wheel Rims, Rear

2.75 x 17 MT H 2

Tyres, Front

100/90 V 18 or 100/90 VR 18

Tyres, Rear

130/90 V 17 or 130/90 VR 17

Brakes, Front

Dual disc brake 285 mm / 11.22 in diameter. Brembo 2 piston caliper

Brakes, Rear

Single disc brake 285 mm / 11.22 in diameter




Dimensions/Weights


Length x Width x Height

2220 x 920 x 1155 mm (87.4 x 36.22 x 45.47 in)

Wheel Base

1516 mm / 59.68 in

Fuel Tank Capacity

22 litres / 4.84 gal / 5.81 gal US

Unladen Weight with Full Tank

253 Kg / 557 lb

Max. Permissible Weight

480 Kg / 1057 lb

Ground Clearance

175 mm / 6.89 in

Seat Height (Unladen)

810 mm (31.90 inches) or 760 mm (29.90 inches) for low seat model

Fuel Consumption (at constant 90 Kph)

4.4 litres 100 Km / 64 mpg / 53 mpg US

Top Speed

215 Kph / 133 mph

Acceleration 0 - 100 Kph / 62 mph

4.1 seconds

Information kindly supplied by P.Hawksley

www.bmbikes.co.uk