Mahle MS 4.145in+ .005in 1/16in 1/16in 3/16in File Fit Rings

This Mahle ring set includes the necessary components for a file-fit piston ring installation. You get a set of low-tension rings with specific dimensions: the top ring is 1/16 inch, the second ring is 1/16 inch, and the oil ring is 3/16 inch. These rings are also specified as being .005 inches oversized, meaning they are intended for pistons that have been machined to a slightly larger bore size than stock.

File-fit rings offer a degree of customization for engine builders. The 'file-fit' designation means that the end gap of the top compression ring will need to be filed down to the correct specification for your specific engine's bore. This allows for precise control over ring gap, which is crucial for optimal performance and sealing in modified or performance engines. Mahle is a well-known name in engine components, and this set is built to their standards for reliability in your build.

Please note that this ring set is 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.