Assembly sold complete with Hot Rods connecting rod, Factory assembled and true to OEM specifications, Hot Rods cranks will meet or surpass the OEM in performance, Ready for installation, Crankshaft is completely rebuildable with genuine Hot Rods connecting rods, "Stroker Kits" crankshaft assemblies add to the length as listed depending on application; in some cases cylinder head must be modified, Main bearings not included