COMP Cams 1/2 in. Rocker Stud and Trunnion Retrofit Kits

COMP Cams 1/2 in. rocker stud and trunnion retrofit kits provide a stiffer valvetrain to achieve maximum valve motion in SBC or BBC engine applications utilizing COMP Cams Ultra Pro Magnum or Ultra Pro Magnum XD rocker arms. They were originally designed for applications competing in the NHRA Stock Eliminator class, but are a great choice for anyone whose sanctioning body's rules do not allow stud girdles. The kits feature 1/2 in. ARP rocker arm studs, 1/2 in. trunnions, 1/2 in. polylocks, new bearings, and new snap rings. They include everything required to switch over to the new studs and freshen and rebuild your rockers at the same time. The COMP Cams 1/2 in. rocker stud and trunnion retrofit kits can also be used to retrofit COMP Cam Pro Magnum or Hi-Tech stainless steel rocker arms. Show Less