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The JE forged four-cylinder piston kit for Subaru EJ-series engines provides a durable, application-specific option for EJ builds. Forged and machined in the USA from 2618 aluminum, these inverted-dome pistons fit a 3.937 in. bore and deliver an 8.80:1 compression baseline. JE's FSR forging reduces skirt width and friction, and the kit includes wrist pins, locks and JE Pro Seal rings for a complete installation-ready package.
JE Pistons SUB 8.8:1 BILLET KIT Set of 4 Pistons
