Supertech Nissan RB26 Factory Shim Replacement 12.15mm Diameter 3.40mm Thickness

Starting with a precise 3.40mm thickness and a 12.15mm diameter, these valve shims from Supertech are made to replace the factory shims in your Nissan RB26 engine. When you're rebuilding the top end or performing valve adjustments, having the correct shim size is crucial for setting your valve lash to the manufacturer's specifications. This ensures your engine runs smoothly and efficiently.

These shims are well-built to meet the demands of performance engines. They are designed to fit precisely where the factory shims would go, making installation straightforward if you're already working on your valve train. Proper valve lash adjustment is key to preventing valve float at high RPMs and ensuring optimal performance and longevity for your RB26.