Feuling Rocker Arm Shaft Studs and Nuts Bolt Kit For Harley Milwaukee-Eight Use Feuling/ARP rocker arm shaft studs and nuts to help relieve stress on the Milwaukee Eight-cylinder heads. The factory and SE cylinder heads have an extremely weak link with the rocker arm shaft standoffs. By using a stud some of the stress is transferred from the standoff casting into the stud. The use of higher lift camshafts and heavier valve springs puts additional stress on the cylinder head making the use of our stud kit a must. Features Tensile strength rated 170,000 psi - Superior & Stronger than OEM & stronger than grade 8 fasteners 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