BMW Motorcycles

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BMW R850R 1994-2002


A second version was built using a Type M28 engine, 1999-2007
Engine
Configuration Air and oil cooled horizontally opposed Type 259 twin, 4 valves per cyl, high cam.  Lubrication 1 US gallon of SF or SG
Bore & Stroke 87.8 x 70.5 mm  Ignition see under Fuel
Capacity 848 cc  Charging system 14 V, 50 Amp Alternator (700 W), 19.5 Amphour low maintenance battery.
Compression Ratio 10.3:1  Starter
Maximum Power 70 Bhp @ 7000 rpm  Transmission Driveshaft with two universal joints and integral torsional damper, Diff 3.36:1 ratio (37/11)
Maximum Torque 57 lb.-ft. @ 5500 rpm  Gearbox 1st gear: 4.16:1 
2nd gear: 2.91:1 
3rd gear: 2.13:1 
4th gear: 1.74:1 
5th gear: 1.45:1
Cam Timing (3mm)
Inlet Open 
Inlet Close 
Exhaust Open 
Exhaust Close 

10 degrees after TDC 
36 degrees after BDC 
35 degrees before BDC 
3 degrees before TDC
Clutch 180 mm dry, single plate with diaphram spring 
Valves 32 mm inlet 
27 mm exhaust 
Fuel Fuel injection and electronic ignition MA 2.2 controlled by Bosch Motronic Exhaust
Chassis
Frame 64 degrees / 120 mm trail Wheels 3.50 x 17 MT-H2, cast alloy, 3-spoke U-profile 
4.50 x 18 MT-H2, cast alloy, 3-spoke U-profile 
Dimensions 
Weight: 
Length: 
Wheelbase: 
Seatheight: 
Ground Clearance: 
 

517 lbs. wet 
85.68 inches (2197 mm) 
57.99 inches (1487 mm) 
760 / 780 / 800 mm 
5.38 inches (138 mm)
Tyres 120/70 - ZR 17 tubeless 
160/60 - ZR 18 tubeless 
Front Suspension Telelever forks.  Brakes Front: 

Rear: 
ABSII on R850R

Rear suspension Paralever swingarm & shaft drive, single shock with variable rebound damping  Fuel Capacity 5.5 U.S. gallons including 1 gal. reserve. Steel tank with fuel pump & filter 
Colours   Standard Features
Performance
Top Speed 180 km/h Fuel Economy
Acceleration