COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.73 Ratio - Big Block Ford / Cleveland / Modified Camshafts & Valvetrain Designed for high rpm

Designed for high rpm

1970-1974 Mercury Colony Park

Connect to air line - fill & bleed with one gauge

Features include -8AN male fittings

1992-1993 Chevrolet K2500 Suburban

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 7/16 in Stud Mount - 1.73 Ratio - Big Block Ford / Cleveland / Modified Camshafts & Valvetrain Designed for high rpmThe 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