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COMP Cams Ultra Pro Magnum XD 1.73 ratio rocker arm is built for 7/16" stud Ford Boss 302, 351C and 429–460 engines. Machined from 8650 steel with a billet pushrod seat insert, this rebuildable rocker features precision-sorted needle bearings and hardened roller tips to reduce wear and support most spring and retainer diameters. XD geometry, refined by FEA and CAD, improves strength, stiffness and MOI for racing use.
COMP Cams Rocker FC 1.73 7/16in Ultra Pro
