Mahle Rings Perf Plasma Moly Steel Top Comp 4.000in x .0625in .190 RW Moly Ring Set (48 Qty Bulk Pk)

These Mahle piston rings feature a plasma moly steel top ring, a tough material choice that stands up well to the heat and pressure inside an engine cylinder. They're designed for a 4.000-inch bore with a .0625-inch top ring groove and a .190-inch ring depth, making them a solid option for performance builds where durability is key. This bulk pack comes with 48 sets, so it's ideal for shops or engine builders working on multiple projects.

The plasma moly coating on the top ring is a well-known method for improving wear resistance and reducing friction, which helps the rings seal better against the cylinder wall. This improved seal means more consistent compression and better overall engine performance. Mahle is a well-known name in engine components, and these rings reflect their focus on creating parts that hold up under demanding conditions.