LS9/LSA Flat-Top Piston Kit

The Diamond Pistons LS9/LSA Piston Kit is engineered for high-horsepower, NOS, and boost applications, offering a quality solution for street and strip builds. Constructed from durable 2618 alloy, these pistons are built to withstand demanding conditions. Key features include 3D milling on the piston crowns for a precise, ready-to-install finish and valve pockets designed to work with most aftermarket cylinder heads. The kit comes with a premium 1.2mm x 1.2mm x 3.0mm ring package and offset pins for quiet operation. A moly skirt coating is applied to reduce friction and protect against skirt wear. The flat-top design with a -2.0cc crown volume results in a 10.5:1 compression ratio with 70cc heads. Forced pin oilers are integrated from the oil ring for enhanced lubrication. This kit is intended for use with 15-degree valve angle LS heads.