Feuling Head Bolt Kit For Harley 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. Top engine builders demand quality fasteners! Secure your engine with complete confidence. The strongest studs & bolts available! 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: Don't Risk Head Gasket Failure! Heat-treated 8740 chrome moly steel studs Precision j-form threads for optimum engagement, to prevent galling and promote more consistent torque loading Special alloyed stainless steel head bolts with a show polish Corrosion-resistant finish Manufactured by ARP to Feuling exact specifications Recommended for all V-Twin engines Kits include moly assembly lubricant and thread sealant Made in the U.s.a.