Feuling Cylinder Stud Kit For Harley The strongest studs & bolts available! Superior in strength and performance to any other cylinder stud head bolt kit on the market, this kit is designed to exceed the needs of high performance engines. Don't Risk Head Gasket Failure! Stock cylinder studs are designed as a stretch to torque stud with a one time use only lifespan. Feuling studs are installed to a torque spec can be reused and carry a lifetime warranty. Features: Heat-treated 8740 chrome moly steel studs Tensile strength rated 170,000 psi - Superior & Stronger than OEM & stronger than grade 8 fasteners Precision j-form threads for optimum engagement, to prevent galling and promote more consistent torque loading Quality engine builders demand quality fasteners! Secure your engine with complete confidence Manufactured by ARP to Feulings exact specifications Kits include moly assembly lubricant for installation Made in the U.s.a.