S&S Cycle .050in Circuit Breaker Shim

.050 inch is the precise thickness of this Circuit Breaker Shim from S&S Cycle. This shim is designed to be placed under the valve spring to make fine adjustments to the spring tension. Getting the spring tension just right is crucial for proper valve operation and engine performance.

This shim is a well-built component from S&S Cycle, a well-known name in performance engine parts. Its specific thickness allows mechanics to dial in the valve spring preload accurately, which can affect how the engine breathes and responds. It’s a small part, but it plays a key role in ensuring your engine’s top end is working exactly as it should.