These rings match OEM design with exception of increased oil ring tension to provide better oil control The top/upper compression ring is a steel ring coated with PVD (Physical Vapor Deposition) process The intermediate/mid ring is ductile iron, napier profile design The oil control ring is a three-piece design with increased tension for improved oil control Made in the U.S.A. Includes enough rings for two pistons.. RINGS M8 114" 4.000 STD
