R45 / R45TIC


Production Model Years
   1978 - 1985

Frame and Engine Numbers

   Frame numbers
    6260001 - 6266303
    6270001 - 6275540
    6280001 - 6280105
    6290001 - 6290305
    6300001 - 6306430
    6320001 - 6329475
    ———
   Engine numbers
    6260001 - 6266303
    6270001 - 6275540
    6280001 - 6280105
    6290001 - 6290305
    6300001 - 6306430
    6320001 - 6329475

Model Specifications
Drivetrain
Displacement473cc
Cylinders2
Bore x Stroke (mm)70 x 61.5
HP @ RPM27 @ 6500
Compression Ratio8.2:1
HP @ RPM35 @ 7250
Compression Ratio9.2:1
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 BrakesBrembo 260mm hydraulic disc single piston
Rear Brakes200mm drum, single leading shoe
Electrical
IgnitionBattery/coil
Spark PlugsBosch W7DC or (35HP, W5DC)
GeneratorBosch G1 14 13V 21A 280W
Capacities & Measurements
Weight205kg
Fuel22l
Wheelbase1390mm (1981-on, 1400mm)
Top Speed145kph
Number Produced28158
No US production. Serial numbers 627xxxx, 629xxxx, and 630xxxx were 35HP (total production 12275); rest were 27HP.

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.