BMW R 25/2
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| BMW R 25/2 | |
| Manufacturer | |
|---|---|
| Production | 1951 |
| Class | Classic |
| Engine | air-cooled, four-stroke, single cylinder, OHV, 2 valves per cylinder |
| Bore / Stroke | 68.6mm x 68.6mm |
| Compression ratio | 6.5:1 |
| Horsepower | 11.94 HP (8.9 KW) @ 5600RPM |
| Transmission | Gear box: 4-speed, manual Final Drive: shaft |
| Suspension | Front: telescopic fork Rear: pushrod, sprung seat |
| Brakes | Front: single 160mm drum Rear: single 160mm drum |
| Front Tire | 3.25x19 |
| Rear Tire | 3.25x19 |
| Length | 81.61 inches (2073 mm) |
| Width | 29.53 inches (750 mm) |
| Weight | 140.0 kg (wet) |
| Manuals | Service Manual |
The BMW R 25/2 was a air-cooled, four-stroke, single cylinder, OHV, 2 valves per cylinder Classic motorcycle produced by BMW in 1951. Claimed horsepower was 11.94 HP (8.9 KW) @ 5600 RPM.
Engine
A 68.6mm bore x 68.6mm stroke result in a displacement of just 247.0 cubic centimeters.
Drive
The bike has a 4-speed, manual transmission. Power was moderated via the dry, single plate.
Chassis
It came with a 3.25x19 front tire and a 3.25x19 rear tire. Stopping was achieved via single 160mm drum in the front and a single 160mm drum in the rear. The front suspension was a telescopic fork while the rear was equipped with a pushrod, sprung seat.
1951 - 1953 BMW R 25/2
The 1951 BMW R 25/2 has, at its heart, an air cooled, four-stroke, 247cc, single cylinder lump paired to a four-speed manual trnasmission, and can reach a maximum power output of 12 horsepower at 5600 rpm. It also comes with laced wheels, a pushrod rear suspension with a sprung single seat, a telescopic front fork, a rear luggage rack, wide handlebars, a large headlamp, a small tail light, full fenders and a dry, single plate clutch.