Supertech piston set for Subaru/Toyota FA20/4U‑GSE engines includes four pistons sized for an 86mm bore and a 12.5:1 compression ratio; rings are excluded. Supplied as a matched four‑piece set, these pistons are intended for engine builds or rebuilds that specify FA20/4U‑GSE dimensions and the listed compression ratio.
Supertech Subaru/Toyota FA20/4U-GSE 86mm Bore 12.5:1 CR Pistons - Set of 4 (Excl Rings)