Mahle MS 4.020in+ .005in 1/16in 1/16in 3/16in File Fit Rings

These Mahle MS piston rings are designed for a 4.020 inch bore with a .005 inch file fit. They feature standard tension and come in the common 1/16 inch, 1/16 inch, and 3/16 inch ring sizes, which are typical for many engine rebuilds. This set is intended for builders who need precise control over ring end gap, allowing for custom fitting to your specific engine build.

Mahle is a well-known name in engine components, and this ring set reflects their focus on providing parts that meet the needs of engine builders. The file-fit design means you'll need to carefully measure and file the end gaps to achieve the correct clearance for your pistons and cylinder walls. This is a crucial step for proper engine sealing and performance, especially in modified or performance applications where tighter tolerances can be beneficial. Remember that these rings are not CARB approved and cannot be shipped to California.