Mahle MS 4.530in+ .005in 1.5 1.5 3.0 mm File Fit Rings

When you're rebuilding the top end of your engine and need to ensure a solid seal between the piston and cylinder wall, a good set of piston rings is crucial. These Mahle file-fit rings are designed for custom engine builds where precise ring gap adjustment is necessary for optimal performance and longevity. The file-fit design means you'll adjust the end gap yourself to match your specific cylinder bore, which is key for engines that have been bored out or modified.

This set features a common ring configuration: two compression rings measuring 1.5mm each, followed by a 3.0mm oil control ring. The rings are supplied at a standard tension and are +.005 inches larger than the nominal size, ready for you to file to your exact cylinder bore measurement. Mahle is a well-known name in engine components, and these rings are a solid option for builders who need reliable parts for their custom projects. Remember, these are not CARB approved and cannot be shipped to California.