Mahle MS 4.070in+ .005in 1.5 1.5 3.0 mm File Fit Rings

This set includes Mahle file-fit piston rings designed for a 4.070 inch bore. You get the rings themselves, ready for precise fitting to your pistons. The ring sizes are 1.5mm for the top and second rings, and 3.0mm for the oil control ring. These are standard tension rings, meaning they provide a good balance of sealing and wear characteristics for many engine builds.

File-fit rings give you the flexibility to achieve the exact piston-to-wall clearance your engine needs, which is crucial for optimal performance and longevity, especially in performance or rebuilt engines. Mahle is a well-known name in engine components, and these rings are a solid option for builders who want to ensure a proper seal between the piston and cylinder wall. Remember that file-fit rings require careful measurement and filing to set the correct end gap before installation.

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 detailed installation instructions and recommended clearances.