Upgrade your 6.0 lifters with a set of field-proven, one-piece chromoly KDD lifters. Kill Devil Diesel uses these rods in all of its internal builds, from the mildest to the wildest; they can handle anything thrown at them—including two consecutive DPC championships, used in the 9-second winning Powerstroke race truck, and in the trailer that hauled it from the East Coast to Colorado and back. They come in the updated 9.795" length to provide the most ideal valve actuation geometry. If you plan on using a performance or competition valve spring set, we highly recommend adding a set of KDD lifter rods to your build!