SNGL CLAIMER PISTON SBC 350

The United Engine & Machine Co S9903HC.060 is a set of 8 hypereutectic pistons designed for performance and street applications. These pistons feature a dome-top design with 14cc volume and a 4.060-inch bore size, intended for SB Chevy 350 engines.

Constructed from a 390 alloy with 16% silicone, they include True-Arc lock rings for use with floating or press pin rods. The pistons also incorporate symmetrical valve reliefs, CNC-machined pin bores, an accumulator groove for enhanced ring seal, cast-in oil returns, diamond-finished skirts, Molykote skirt coating, and include wrist pins and spiral locks.