Supertech Valve Spring Shim 1.140in OD .570in ID .030in Thick (Drop Ship Only)

When you're rebuilding the top end of your engine, getting the valve spring installed height just right is critical for proper valve train function. These valve spring shims from Supertech are designed to help you achieve that precise height. They are made to fit accurately, ensuring they sit flush against the spring seat or retainer without any wobble.

This particular shim measures 1.140 inches in outer diameter and 0.570 inches in inner diameter, with a thickness of 0.030 inches. Using shims like these allows you to fine-tune the installed height of your valve springs, which is important for maintaining the correct spring tension and preventing valve float at higher RPMs. They are well-built to handle the pressures within the cylinder head.