FX Series Forged Piston Set, 3.552" Bore, -4cc Flat Top

The Fss 1-4852-3552 is a forged piston set from the FX Series, specifically engineered for Ford Modular 4.6L 4V engines. These pistons feature a -4cc flat top design, a 3.552-inch bore, and a 0.866-inch pin diameter with a 1.21-inch compression height. Constructed from 2618 alloy, these pistons are designed for high-performance applications and are made in the USA. Key specifications include a 3.543-inch crankshaft stroke, a 5.933-inch connecting rod length, and a TDC assembly height of 8.915 inches for a zero deck height. The ring groove width is 1.5/1.5/3MM. The compression ratio varies based on the combustion chamber size, with figures of 11.55:1 for a 44cc chamber, 10.52:1 for a 50cc chamber, and 10.08:1 for a 53cc chamber. This piston set is suitable for use with full-floating or press-fit pins. Options are available for selecting the piston series (FX-1, FX-2, FX-3) and whether to include a DSS Racing piston ring kit. The FX-2 and FX-3 series are made from 2618 alloy, while the FX-1 uses 4032 alloy. The FX-3 series offers advanced features like lateral gas ports, XR .225 Wall Pin Upgrade, and Spiro Locs. All pistons are forged and machined in the USA.