JE Pistons Subaru EJ20 Head/EJ25 Block Ultra Series 3.927 in. Bore Kit 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, 3.927 in. Bore, 8.50:1, Inverted Dome/Dish, 4 Cyl. Piston Kit Subaru EJ255/EJ257 with EJ20 Head