The Mahle file-fit piston ring set is made for a 4.135"+0.005 bore and supplied with 1.5/1.5/3.0mm ring sizes to restore cylinder sealing and control oil. Intended for rebuilds where accurate ring-to-bore fit is required, this set focuses on the supplied dimensions and file-fit preparation. It offers a straightforward option for engine assembly without extrapolating beyond the provided measurements.
Mahle MS 4.135in+ .005in 1.5 1.5 3.0 mm File Fit Rings