MAHLE Piston Ring Set Bore File Fit

The MAHLE Piston Ring Set in the Bore File Fit design is an engine piston ring set for engine rebuilds and performance builds. File fit means the rings are supplied with a end gap that is not set at the factory. The installer sets the end gap to match the cylinder bore size and the build's intended use. Compared with pre-gapped rings, this gives the engine builder more control over ring gap.

Key Features:

• File fit design: The installer sets the end gap to suit the bore and application.
• Complete ring set: Includes the compression and oil control rings needed for an engine rebuild.
• OE-level engineering: MAHLE is a leading original equipment supplier of pistons, rings and engine components.
• Precision manufacturing: Made for consistent ring tension, good cylinder wall sealing and long service life.
• Helps control oil use: A properly gapped, correctly seated ring set supports compression and helps limit oil consumption and blow-by.

Each piston ring set is sold under its own part number. Choose the part number that matches your engine and bore size. Set the end gap with a ring filing tool and check it with a feeler gauge before final installation. Follow the engine manufacturer's specifications for gap and installation.