These are the flat top high compression pistons installed in the GB engines.These are not compatible with the low compression dished US type.
They came out of my earlier motor, when the head dropped a seat and terminally damaged the fourth one. These three have only about 3000 miles on them, and are in great shape. If you have a set of flat tops and need to replace a single piston due to a dropped valve or seat, here is the solution!
Ill sell individual ones for $90 each.


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