Studs are made from heat-treated 8740 chromoly polished headbolts are made from alloyed stainless steelKit includes eight cylinder studs, eight head bolts, moly assembly lubricant and thread sealantStock replacement reusable studs and head bolts recommended for all V-Twin enginesPrecision J-formed threads prevent galling and promote more consistent torque loadingDesigned to exceed the needs of high-performance enginesManufactured by ARP® to Feuling's exact specificationsStop head and base gasket failureMade in the U.S.A.