Uprated big end kit to suit BSA M20-M21 and similar cranks.
This big end kit uses a modern caged roller bearing that has been hardened and silver plated to reduce friction.
As with all conrods with a press in big end ring, it will require honing to suit the size of the big end pin and the bearing.
We offer a fitting service where we can either just fit the big end ring to your conrod and hone to size, or we can do a full crank rebuild including ultra sonic cleaning.
BSA M20 M21 B31 B33 Big End Kit PES 65-0486A 38mm with silver caged bearing
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