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JE Pistons forged eight‑piston kit for 400 small‑block Chevy (SBC) engines. Flat‑top pistons with a 4.165 in. bore, 1.250" compression distance and -5.0 cc crown volume are intended for high‑demand SBC applications requiring precise chamber sizing. Forged in the USA from 2618 aluminum and machined to spec, these pistons use JE's FSR forging to cut friction; accumulator grooves and skirt coatings are included as application dictates to improve ring control.
JE Pistons 4.165 400 SBC FT Set of 8 Pistons
