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R90S
Model Documentation
- R60/6 R75/6 R90/6 R90S Riders Handbook (English language) (13.3 MB)
- R90S Owners handbook (with comments by Snowbum) (English language) (published 1975)
- R90S Owners handbook (English language) (published 1975) (8.3 MB)
- Owners manual, US models (English language) (published 1975) (2.9 MB)
- R60/6 R75/6 R90/6 R90S Riders Handbook Supplement (English language) (published 1975) (3.1 MB)
- R90S parts manual (English language) (37.7 MB)
- R90S parts manual (English language) (published 1975) (70.8 MB)
- R90S parts manual (German language) (published 1975) (42.7 MB)
- R90S parts manual (Multiple language) (published 1975) (76.0 MB)
- Parts List for Airheads 1977 (Multiple language) (published 1977) (89.6 MB)
- Parts List for Airheads 1980 (Multiple language) (published 1980) (247.5 MB)
- Work Time Rates for Slash 6 and R90S (English language) (published 1972) (5.2 MB)
- Repair/Workshop Manual for /6 and 90S models (English language) (published 1999) (37.8 MB)
- (Bulletin #1036R) Tire pressures and minimum tread depth (English language) (published 1977) (1.2 MB)
- (Bulletin #1038R) Front fork lubricants and oil capacity (English language) (published 1977) (1.2 MB)
- R90S Wiring diagram (with comments by Snowbum) (English language)
- R90S Wiring diagram in color (English language)
- Full electrical documentation for 1969 - 1983 models (Multiple language) (published 1983) (68.9 MB)
- Full electrical documentation for 1969 - 1986 models (Multiple language) (published 1986) (77.0 MB)
- Full electrical documentation for 1969 - 1987 models (Multiple language) (published 1987) (81.2 MB)
Model Specifications | |
|---|---|
| Drivetrain | |
| Displacement | 898cc |
| Cylinders | 2 |
| Bore x Stroke (mm) | 90 x 70.6 |
| HP @ RPM | 67 @ 7000 |
| Compression Ratio | 9.5:1 |
| Valves | OHV, 2 per cylinder |
| Clutch | Dry, single plate, cable operated |
| Transmission | 5 speed, foot shifted |
| Final Drive | Driveshaft |
| Running Gear | |
| Frame | Tubular steel double cradle |
| Front Suspension | Hydraulically damped telescopic fork |
| Rear Suspension | Twin shock swingarm |
| Front Brakes | Dual ATE 260mm disc with single piston |
| Rear Brakes | 200mm drum, single leading shoe |
| Electrical | |
| Ignition | Battery/coil |
| Spark Plugs | Bosch W5DC |
| Generator | Bosch G1 14 13V 21A 280W |
| Capacities & Measurements | |
| Weight | 215kg |
| Fuel | 24l |
| Wheelbase | 1465mm |
| Top Speed | 200kph |
| Number Produced | 17465 |
Serial numbers in 4070001 - 4093724 were delivered outside the US; 4950001 - 4991260 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.