This JE Piston Rings set is sized for Subaru EJ257 blocks used with an EJ20 head and provides ring thicknesses of approximately 1.2 / 1.2 / 2.5 (top, second, oil). The kit specifies a carbon steel nitride top ring, an iron-phosphate second ring, and a carbon steel chrome low-tension oil ring to deliver precise sealing. JE offers precision ring services and coatings used by professional teams to improve durability and ring seal.
JE Pistons Ring Sets 1.2 / 1.2 / 2.5 Subaru EJ257 Block w/EJ20 Head