BMW k1  historical & technical data 

Facts and figures:  

 

official operating permit

 

Start of production

Market presentation

Start series production

Sales start in Germany

End  of production

23rd March 1988

 

August 1988

20th September 1988

End of March 1989

29th May 1989

September 1993

 

Numbers produced

 

No. sold in Germany

 

6,921

 

2,050

 

Price

20,200 DM + options as: ABS, panniers, tank bag contr.catalytic converter heated grips, theft alarm

fuel+ water temp. meter

hazard warning system..

 

Engine

 

Motor Type

4-stroke horizontal 4 cyl. in-line engine, liquid cooled

Bore x Stroke

67 x 70 mm (2.63 x 2.75 in)

Displacement

987 cc

Max Power

100 hp (74 KW) at low 8,000 rpm

Max Torque

100 Nm/ 74 ft lb at 6,750 rpm

relevant Torque characteristic

Compression Ratio

67 Nm = 2/3 of max torque available at 2,500 rpm
11 : 1

Valves Per Cylinder

4

Valve Control

DOHC, using drive chain and cup tappets

Carburation System

Electronic injection, Bosch Motronic

Engine Lubricating System

Wet sump

   

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 : 2.75

Bevel/Crownwheel

12 / 33 teeth

   

Electrical System

 

Ignition System

Electronic ignition, Bosch Motronic

Alternator

12 V 460 W

Starter

0.7 kW

Spark Plugs

Bosch XR5DC, Beru R5DU, NGK DR7EA/ DR7ES Denso X22EPR-U9, Champion RA6HC

   

Chassis

 

Type of Frame

 

Tubular space frame, engine serving as load bearing component

Front wheel suspension

Telescopic fork with hydraulic shock absorbers

Rear wheel suspension

BMW Paralever swinging arm

Spring Travel Front/Rear

135 / 140 mm

Wheel Rims, Front

3.50 x 17 MT H 2

Wheel Rims, Rear

4.50 x 18 MT H 2

Front tires

Rear tires

120 / 70 ZR17 58W

160 / 60 ZR18 70W

Available specification (2021)

 

 

 

Sports tires: Bridgestone BT016 pro Hypersport

Touring tires: Continental Road Attack I / II / III 

                        Pirelli Angel GT

Michelin stopped its development for the k1

Brakes, Front

 

Dual disc brake 305 mm / 12" in diameter.

Brembo 4 piston caliper

Brakes, Rear

 

Single disc brake 285 mm / 11.22" in diameter Brembo 2 piston caliper

 

   

Dimensions/Weights

 

Length x Width x Height

2230 x 875 x 1210 mm (87.79 x 34.44 x 47.63 in)

Wheel Base

1565 mm / 61.61 in

Fuel Tank Capacity

22 litres / 4.84 UK gal / 5.81 US gal

Unloaden Weight with Full Tank

234 kg / 515 lb

Max. Permissible Weight

480 kg / 1057 lb

Ground Clearance

140 mm / 5.51 in

Seat Height (Unladen)

780 mm (30.7 inches)

Fuel Consumption (at constant 90 Kph)

4.2 litres 100 Km / 62 mpg / 56 mpg US

Top Speed

240 Kph / 149 mph

Acceleration 0 - 100 Kph / 62 mph

3.9 seconds

   
 

 

 

bmbikes.co.uk/specpages/K1.htm

BMW manual/ riders handbook