| MODEL | BMW R 69S 1966 - 1969 |
| Year | 1966 - 1969 |
| Engine Type | Four stroke, two cylinder horizontally opposed boxer, OHV pushrod, 2 valves per cylinder |
| Displacement / Capacity | 594 cc / 36.2 cu in |
| Bore X Stroke | 72 x 73 mm |
| Compression Ratio | 9.5:1 |
| Cooling System | Air cooled |
| Max Power | 31.3 kW / 42 hp @ 7000 rpm |
| Max Torque | — |
| Ignition | Magneto |
| Induction | 2 x Bing 26 mm carburettors (1/26/75-76 or 1/26/91-92) |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Forced feed, gear-type oil pump |
| Gear Box | 4 Speed, foot shift (4.17 / 2.73 / 1.94 / 1.54) |
| Clutch | Single plate, dry |
| Final Drive | Shaft |
| CHASSIS SPECS | |
| Frame | Double loop steel tubular frame |
| Front Suspension | Earles leading-link fork with hydraulic dampers, hydraulic steering damper |
| Rear Suspension | Long swingarm with spring units and hydraulic dampers |
| Front Brakes | ∅200 mm duplex drum, full hub |
| Rear Brakes | ∅200 mm simplex drum, full hub |
| DIMENSION SPECS | |
| Overall Length | 2125 mm / 83.7 in |
| Overall Width | 722 mm / 28.4 in |
| Overall Height | 980 mm / 38.6 in |
| Seat Height | — |
| Wheelbase | 1415 mm / 55.7 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 202 kg / 445 lbs |
| WHEEL SPECS | |
| Front Tyre | 3.50 - S18 |
| Rear Tyre | 4.00 - S18 |
| FUEL SYSTEM | |
| Fuel Capacity | 17 Litres / 4.5 US gal |
| Fuel Consumption | 5.3 L/100 km / 44 US mpg |
| Top Speed | 175 km/h / 109 mph |
Photo: Jeff Dean, Attribution, via Wikimedia Commons
Photo: User:R69S, Attribution, via Wikimedia Commons
In its final years the R69S remained in production alongside the telescopic-fork R69US, with the Earles fork still preferred by sidecar users. Changes were minor and regulatory, such as a revised noise rating from 1966 and DOT reflectors and decals on 1969 US bikes. Production ended in 1969 when the all-new /5 series arrived.
