R90/6


Production Model Years
   1974 - 1976

Frame and Engine Numbers

   Frame numbers
    4040001 - 4044971
    4050001 - 4053311
    4060001 - 4063018
    4930001 - 4932218
    4960001 - 4964263
    4970001 - 4973316
    ———
   Engine numbers
    4040001 - 4044971
    4050001 - 4053311
    4060001 - 4063018
    4930001 - 4932218
    4960001 - 4964263
    4970001 - 4973316

Model Specifications
Drivetrain
Displacement898cc
Cylinders2
Bore x Stroke (mm)90 x 70.6
HP @ RPM60 @ 6500
Compression Ratio9.0:1
ValvesOHV, 2 per cylinder
ClutchDry, single plate, cable operated
Transmission5 speed, foot shifted
Final DriveDriveshaft
Running Gear
FrameTubular steel double cradle
Front SuspensionHydraulically damped telescopic fork
Rear SuspensionTwin shock swingarm
Front BrakesSingle ATE 260mm disc with single piston
Rear Brakes200mm drum, single leading shoe
Electrical
IgnitionBattery/coil
Spark PlugsBosch W5DC
GeneratorBosch G1 14 13V 21A 280W
Capacities & Measurements
Weight215kg
Fuel18l (optional, 22l)
Wheelbase1465mm
Top Speed188kph
Number Produced21097
Serial numbers in 4040001 - 4063018 were delivered outside the US; 4930001 - 4973316 were US only.

The information provided here was obtained from a variety of public sources and may not reflect official BMW archival data.
Please contact the BMW Archives for official data regarding models.