The Supertech forged piston set for Ford/Mazda 2.3L engines with an 87.5mm bore includes four pistons with a +1.5cc dome, yielding a 12.5:1 compression ratio. Supplied as a set of four excluding rings, these pistons are intended for builds where a modest increase in compression is desired while maintaining proper fit to the listed bore size.
Supertech Ford/Mazda 2.3L 87.5mm Bore +1.5cc Dome 12.5:1 CR Pistons - Set of 4 (Excl Rings)