Engine Piston Ring Set (S38816-030) by Enginetech®. Superior size and weight grading within each set. Most Enginetech pistons are decked 0.010″ to 0.020″ to compensate for oversized bores and head/deck milling. Enginetech pistons are manufactured with state of the art materials to match OE requirements. Offers cast aluminum, hypereutectic, and forged applications. Treatments such as skirt coatings, anodized heads & Ni-resist inserts are used as required. Superior quality. Enginetech specializes in providing high performance engine pistons for engine rebuilds for domestic, import, and high performance application. Pistons are manufactured with state of the art materials to match OE requirements. Enginetech offer cast aluminum, hypereutectic, and forged applications. Treatments such as skirt coatings, anodized heads & Ni-resist inserts are used as required. Most Enginetech pistons are decked 0.010” to 0.020” to compensate for oversized bores and head/deck milling.