PRJ100-4PK Keith Black, replacement .927" piston lock ring

These Keith Black .927-inch piston lock rings are the final piece of the puzzle when installing KB Performance pistons in your Twin Cam. Sold as a set of four, this pack gives you the two clips needed for each piston in a standard Big Twin build. They are designed to fit all KB .927-inch wrist pins, including those used in Twin Cam and KB344, KB343, or KB399 series pistons. Never reuse old circlips; always install fresh ones like these to prevent catastrophic engine failure. These are the direct match for KB wrist pins 944732 and 944733, ensuring your wrist pins stay securely seated throughout the life of your engine.