Clevite Plasma-Moly Piston Ring Set Bore

Clevite Plasma-Moly piston ring sets are engine piston rings made by MAHLE Original. They are for engine builders and rebuilders who want a durable, well-sealing ring package for street, performance, racing, or marine engines. Each set is built around a plasma-moly faced top ring. Several bore sizes and ring configurations are offered under this product line.

Key Features:

• Plasma-moly top ring: The top ring is made from high-strength steel with a proprietary plasma-sprayed moly face. The coating helps extend ring life, reduce side wear, and limit groove pound-out.
• High strength and fatigue resistance: The ring material has high tensile strength, hardness, and yield strength. This helps prevent ring breakage.
• Lighter, thinner ring design: The smaller cross-section lowers ring mass, so the ring tolerates inertial forces better and keeps sealing against the bottom of the ring groove. It also lets the top ring groove sit closer to the top of the piston. That reduces crevice volume and unburned fuel around the top ring land.
• Better bore conformability: The thinner section follows cylinder bore distortion more easily in high-output, high-RPM engines.
• Performance benefits: Better oil economy and blow-by control, lower friction, and longer service life.

These sets are also known as moly piston rings or engine ring sets. Check your bore size, ring widths, and tension requirements against your pistons before ordering. Clevite and MAHLE have long been known for piston rings that last and stand up to hard use.