16505-01 Harley-Davidson® "Cylinder Studs; Twin Cam' 1999-2017" The strongest studs available! * Top engine builders demand quality fasteners! Secure your engine with complete confidence * Superior in strength and performance to any other cylinder stud kit on the market, this kit is designed to exceed the needs of high performance engines. * Dont 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. * Heat-treated 8740 chrome moly steel studs * Precision j-form threads for optimum engagement, to prevent galling and promote more consistent torque loading. * Manufactured by ARP® to Feulings® exact specifications * Recommended for all V-Twin engines * Kit includes 8 cylinder studs,(7/16in. x 6.325in. studs) * Sold as a Pack of 8.