O.S. Engines Crankshft Ball Bearing Rear 12TZ Spec II OSM21931100
OSM21931100 O.S. Crankshft Ball Bearing Rear 12TZ Spec II

O.S. Engines Crankshft Ball Bearing Rear 12TZ Spec II OSM21931100

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O.S. Speed crankshaft rear bearing is constructed of ceramic. Ceramic bearings resists heat and last longer than steel.

Inner Diameter: .47" (12mm)
Outer Diameter: .82" (21mm)
Thickness: .19" (5mm)

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