Mahle MS 4.245in +.005in 1.0mm 1.0mm 2.0mm File Fit Rings

Mahle is a well-known name in engine components, often supplying parts for original equipment manufacturers. This set of Mahle MS file fit piston rings is designed for engine rebuilds where precise ring gap adjustment is needed. The 'file fit' designation means you'll need to file the ends of the top two rings to achieve the correct gap for your specific engine build, allowing for custom tuning and performance optimization.

This ring set features a 1.0mm top ring, a 1.0mm second ring, and a 2.0mm oil ring. They are manufactured to a 4.245-inch bore size and are precisely machined to be 0.005 inches oversize, which is helpful when dealing with cylinders that have been bored out slightly during an engine overhaul. The standard tension is suitable for a wide range of applications, and the well-built nature of Mahle components means you can expect them to perform reliably.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to your engine's specific service manual for correct installation procedures and ring gap specifications when using file fit rings.