Enginetech P5076 Hypereutectic Pistons For 2007+ Chevrolet Gen IV 6.2L L92 L9HAnodized head; Flat Top w Valve Reliefs; Coated Skirts; Floating Pins; 1. 5 1. 5 2. 5 MM ring grooves Enginetech pistons have 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. We offer cast aluminum, hypereutectic, and forged applications. Treatments