Mahle Rings 4.040in Bore .043in1.5MM3.00MM Plasma Moly Ductile Low Tension Reduced Rad Moly Ring Set

This Mahle piston ring set is built with ductile iron plasma moly top rings, measuring 4.040 inches in bore diameter. The top rings are .043 inches thick, with second rings at 1.5mm and oil rings at 3.00mm. This specific combination of materials and dimensions is chosen for its ability to handle the stresses within the cylinder, offering a solid option for engine rebuilds where durability and proper sealing are key.

The plasma moly coating on the top rings is a notable feature, known for its excellent wear resistance and ability to reduce friction against the cylinder wall. This helps maintain consistent compression and oil control over time, especially in engines that see regular use. The low tension design also contributes to reduced internal friction, which can lead to slightly improved efficiency. These rings are designed to fit right into the piston grooves, making them a straightforward component for a professional engine builder or a dedicated DIYer tackling a rebuild.

When rebuilding an engine, selecting the right piston rings is crucial for performance and longevity. This Mahle set offers a well-built solution with materials chosen for their performance characteristics. Be aware that these rings are not CARB approved and cannot be shipped to California.