COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 3/8 in Stud Mount - 1.50 Ratio - Small Block Chevy (Set of 16) 4386XXLBK use a PN 8874 Harness

use a PN 8874 Harness for a direct plug-in installation

An extra thick

Oil pressure

Available in standard

Stands are 14" tall with a sturdy 12" x 15" base and rated at 3

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 3/8 in Stud Mount - 1.50 Ratio - Small Block Chevy (Set of 16) 4386XXLBK use a PN 8874 HarnessThe next design evolution of the Hi Tech Stainless Steel Roller Rocker Arms are built to outlast and outperform in accuracy and strength. The Ultra Pro Magnum XD Rocker Arms are engineered from durable 8650 steel and include a machined billet pushrod seat insert for a wide range of super accurate ratios. A unique and wide ratio range to fit almost any popular application. These XD rockers are fully rebuildable and boast precision sorted needle