The main part of a stroker kit is the crank (part #J0711ER), and this one is a beauty. This four-inch-stroke Lunati Pro Series forged crank is their top-of-the-line unit. Made from the best quality 4340 steel, this piece is American forged and machined. The shaft surface finish is grade 5 RMS or better, and the journal radii are ground to .140 inch. In addition, each rod journal is drilled with a 7/8-inch or 3/4-inch lightening hole to reduce inertia weight. To ensure everything was just right Outlaw Racing line-honed the block specifically for this crank.