First produced in 1982 the K100 series was one of the first heavy weight sport bikes from BMW. It took the road by storm and made many riders loyal BMW fans. It featured some of the most advanced engineering of it's time and was to bring BMW one step closer to it's present day roots.

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 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).
0 007 291

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 or 1 : 3.00 (K100/2 from 1987: 1 : 2.81)

Bevel/Crownwheel
11 / 32 or 11 / 33 teeth (K100/2 from 1987: 11 / 31)
 

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

Tyres, Rear 130/90 V 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 960 x 1155 mm (87.4 x 37.79 x 45.47 in)

Wheel Base
1516 mm / 59.68 in

Fuel Tank Capacity
22 litres / 4.84 UK gal / 5.81 US gal (K100/2 from 1987: 21 litres / 4.62 UK gal / 5.55 US gal)

Unladen Weight with Full Tank
239 Kg / 526 lb (K100/2 from 1987: 240 Kg / 529 lb)

Max. Permissible Weight
450 Kg / 991 lb (K100/2 from 1987: 480 Kg / 1057 lb)

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

Ground Clearance 175 mm / 6.89 in

Fuel Consumption (at constant 90 Kph)
5.0 litres 100 Km / 56 mpg / 47 mpg US

Top Speed 215 Kph / 133 mph

Acceleration 0 - 100 Kph 62 mph 4.3 seconds


 

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