Another ISKY first, introduced to the industry in 1958. ISKY Hi-strength Screw-In Rocker Arm Studs replace stock pressed-in studs which are prone to pull-out with higher valve spring loads and valve lift during the stress of high-speed competition. Manufactured from aircraft quality 4130 chrome moly steel, they featured rolled threads for better structural grain flow and fatigue resistance. Three types are available to the high-performance enthusiast.

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