Mahle MS 4.080in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings

This set includes Mahle MS file fit piston rings designed for a 4.080 inch bore, with a +.005 inch oversize. You get three rings per cylinder: two compression rings measuring 1.0mm thick and one oil control ring measuring 2.0mm thick. These rings are intended for engines where precise gap setting is needed during installation.

Mahle is a well-known name in engine components, and these file fit rings are a solid option when you need to tailor the ring gap to your specific engine build. The file fit design means you'll need to carefully measure and file the ends of the top compression rings to achieve the correct clearance in your cylinder bores. This allows for optimized performance and sealing, especially in modified or performance applications where standard rings might not offer the ideal gap.

Remember that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for proper installation procedures and recommended ring gap specifications.