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BMW R850RT Specifications


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Start of Production


Click to View

End of Production


Numbers Produced


Price (2003) UK




Motor Type

Four-stroke, two cylinder, horizontally opposed "Boxer" engine, air cooled

Bore x Stroke

87.8 x 70.5 mm (3.45 x 2.77 in)


848 cc

Max Power

70 hp (52 KW) at 7,000 rpm (performance reduction 34 hp (25 Kw) at 5,000 rpm possible)

Max Torque

77 Nm / 56 ft lb at 5,600 rpm (performance reduction: 60 Nm / 44 ft lb at 3,000 rpm)

Compression Ratio

10.3 : 1

Valves Per Cylinder


Valve Control

hc, using chain drive, cup tappets, push rod and rocker arm

Mixture Control / Engine Management

Electronic intake pipe injection/digital engine management: Bosch Motronic MA 2.4 with overrun fuel cut off

Emission Control

Closed loop 3 way catalytic converter

Engine Lubricating System

Wet sump

Power Transmission



Single disc dry clutch, hydraulically operated


Constant mesh 6 speed gearbox


Shaft Drive

Electrical System


Ignition System

Electronic ignition, Bosch Motronic MA 2.4


700 W three phase alternator


12V / 19 Ah



Type of Frame

Three section composite frame consisting of front & rear section, load bearing engine

Front wheel suspension

BMW Motorrad Telelever; stanchion diameter 35 mm, central strut, rebound damping adjustable

Rear wheel suspension

Die cast aluminium single sided swinging arm with BMW Motorrad Paralever; central strut, spring pre-load adjustable to continuously variable levels by mean of a hydraulic handwheel, rebound adjustable damping

Travel Front/Rear

120 / 135 mm (4.72 / 5.31 in)


Die cast aluminium wheels

Wheel Rims, Front

3.50 x 17

Wheel Rims, Rear

5.00 x 17

Tyres, Front

120 / 70-ZR 17

Tyres, Rear

170 / 60-ZR 17

Brakes, Front

EVO brake system with dual disc, floating brake discs, diameter 320 mm / 12.6 in, 4 piston fixed caliper

Brakes, Rear

Single disc brake 276 mm / 10.86 in diameter, double piston floating caliper


Special equipment BMW Motorrad Integral ABS (partially integral)



Length x Width x Height

2170 x 940 x 1220 mm (85.43 x 37.00 x 48.03 in)

Seat Height

800 mm / 31.49 in (special equipment low seat bench: 770 mm / 30.31 in)

Wheel Base

1487 mm / 58.54 in

Castor (in Normal Position)

127 mm / 5.00 in

Steering Head Angle (in Normal Position)

61.9 degrees

Fuel Tank Useable Volume

20.5 litres / 4.50 gal / 5.41 gal US


4.0 litres / 0.87 gal / 1.05 gal US

Unladen Weight with Full Tank

282 Kg / 621 lb

Max. Permissible Weight

490 Kg / 1079 lb

Payload (with Standard Equipment)

212 Kg / 466 lb

Fuel Consumption over 100 Km @ constant 90 Kph

4.6 litres / 61 mpg / 51 mpg US

Fuel Consumption over 100 Km @ constant 120 Kph

5.7 litres / 49 mpg / 41 mpg US

Fuel Type

Unleaded Premium minimum octane rating 95 (RON)

Top Speed

Approx. 187 Kph / 116 mph



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