KB CLAIMER PISTON CHEVY 383 ROD 5.700 DISH 18CC 2V

The United Engine & Machine 9956HC.STD is a set of eight hypereutectic pistons designed for performance and street applications. Constructed from a 390 alloy with 16% silicone, these pistons feature a circular dish with 18cc volume and symmetrical valve reliefs.

They are engineered with CNC-machined pin bores for accuracy, an accumulator groove for improved ring seal, and cast-in oil returns. The pistons also include a Molykote skirt coating and come with True-Arc lock rings, making them compatible with both floating and press pin rod applications. The piston ring size is 5/64 x 5/64 x 3/16, and wrist pins are included.