BMW /2 motorcycle pistons by Nural

The early (1955-61) pistons usually had 5 rings, 3 compression and two oil control rings. One oil ring above the wrist pin and one below. In about 1960, depending upon model, they changed to 3 rings. In 1960 only, the R60 had 4 rings, 3 compression and one oil ring. In 1961 they were only 3 rings, 2 compression and one oil ring.

Url: http://w6rec.com/duane/bmw/piston/index.htm

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Category: Vintage BMW

Date Listed: 8 May 2010

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