Mahle Rings Pro Series Performance Rings Ultra Low Tension 4.000 Bore Moly Ring Set

Mahle's Pro Series Ultra Low Tension Moly Ring Set is built for engines with a 4.000-inch bore. These rings are designed to reduce friction and improve oil control, which can lead to better overall engine performance. The moly coating on the top ring helps to seat the ring quickly and provides a durable surface that can handle increased heat and stress.

This set features ultra-low tension designs, meaning they exert less pressure against the cylinder wall. This is beneficial for performance applications as it reduces parasitic drag, allowing the engine to rev more freely and make more power. The moly coating is a popular choice for performance builds because it's well-known for its ability to withstand high temperatures and provide a long service life, especially when paired with the right cylinder wall finish.

Keep in mind that these rings are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper ring gap setting and installation procedures to ensure optimal performance and longevity.