JE Pistons Subaru EJ20 Head/EJ25 Block Ultra Series Set of 4 Pistons

JE Pistons Ultra Series pistons for sport compact and euro applications combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick-wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. Premium, gas-nitrided carbon steel rings are included. JE Ultra, Subaru, EJ Series, 3.918 in. Bore, 8.50:1, Inverted Dome/Dish, 4 Cyl. Piston Kit Subaru EJ255/EJ257 with EJ20 Head