BMW R 4 in Movies

Engine

The engine was a Air cooled cooled Four stroke, single cylinder vertical. A 84 x 78 mm stroke result in a displacement of just 498 cc / 30.4 cu in.. The engine features a 5.7:1 compression ratio.

Chassis

It came with a 3.50 x 26" SS front tire and a 3.50 x 26" SS rear tire. The front suspension was a Plate spring, 9 laminae with 2 friction shock absorbers while the rear was equiped with a Rigid, sping loaded saddle The R 4 is fitted with a 12 L / 3.2 US gal fuel tank.


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