Spring Shims - 1.500 OD .020 Thick

Spring Shims - 1.500 OD .020 Thick are precision valve spring shims designed for high-performance racing and engine building applications where exact valve train geometry is critical. These shims serve as spacers between valve springs and their seats, allowing tuners and mechanics to fine-tune spring pressure and pre-load without replacing entire spring assemblies.

Constructed from hardened steel, these shims feature a 1.500-inch outer diameter and a precisely controlled 0.020-inch thickness. The thickness allows for incremental adjustments to spring load while maintaining structural integrity under high-RPM conditions and thermal cycling. This set includes 16 individual shims, providing flexibility to adjust multiple valves or make progressive adjustments across an entire cylinder head.

These shims are ideal for enthusiasts upgrading to aftermarket camshafts, tuning spring pressures on modified engines, or compensating for wear in valve train components. Installation is straightforward, as shims stack directly under the valve spring assembly, making them compatible with various engine configurations.