COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 3/8 in Stud Mount - 1.50 Ratio - Small Block Chevy (Set of 16) Recovery Tank 6 3/8 Ultra Pro Mag

6 3/8 Ultra Pro Mag

Reduction of bump steer improves handling and straight line stability and enhances overall precision of the steering system

Kit includes a 4" diameter water pump pulley with a 6-groove main drive and 3-groove accessory drive

Fast Shaft Yokes are available for quick changes and 9-Inch Ford type rear ends

COMP Cams Ultra Pro Magnum XD Chromoly Roller Rocker Arm - 3/8 in Stud Mount - 1.50 Ratio - Small Block Chevy (Set of 16) Recovery Tank 6 3/8 Ultra Pro MagThe 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