These Wiseco Pistons for the Mitsubishi 4G63 2G 7 Bolt Engine are designed to be used with either a Stock 88mm Stroke and a 156mm "Long Rod" or a 100mm Stroker Crankshaft and a standard length 150mm Rod. All of these Pistons come with Wiseco's Armour Plating for Extreme Strength and Wiseco Armour Glide Skirt Coating.