Forged piston crown with generous valve pockets for big valves and camsPrecision-fit rings selected for each application for ultimate sealingForce-fed pin oiling provides enhanced lubrication of the piston pinPressure seal groove reduces ring lifting and power lossArmorGlide® skirt coating reduces friction, providing quieter operation and improving scuff resistanceValued-packaged with two pistons, rings, piston pins and circlipsPiston is made in the USA