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This is a replacement Werks Racing 14.2x25.3mm Ceramic Rear Engine Bearing, and is intended for use with all Werks .21 - .28 engines. This is a replacement bearing for the Werks "Pro-C" line of engines, but is also an excellent upgrade for any engine that uses a Steel 14.2x25.3mm rear bearing. Ceramic bearings have many advantages over standard steel bearings, such as decreased weight, higher RPM capabilities, increased corrosion and wear resistance, as well as reduced friction and vibration.
