Built to outlast and outperform in accuracy and strength, Ultra Pro Magnum XD roller 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 from 1.5 to 1.8 in 0.5 in. increments for Chevy and 1.6 to 1.73 for various Ford applications is available. These Ultra Pro Magnum XD rockers are fully rebuildable and boast precision-sorted needle bearings and hardened roller tips. And, they work with most diameter springs and retainers. The XD design utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI (moment of inertia) optimization for drag and circle track applications.

More From This Category

COMP Cams Rocker Arm, Ultra Pro Magnum XD, 1.55 Ratio, For Chevrolet SBC w/ 3/8 in. Stud, Full Roller, Steel, Each

COMP Cams Rocker Arm, Ultra Pro Magnum XD, 1.55 Ratio, For Chevrolet SBC w/ 3/8 in. Stud, Full Roller, Steel, Each

$80.61

CROWCAMS Rocker Set, For Chevrolet BB, 1.73RR 7/16 Stud, 600lb Max Spring Pressure

CROWCAMS Rocker Set, For Chevrolet BB, 1.73RR 7/16 Stud, 600lb Max Spring Pressure

$386.77

COMP Cams Rocker Arm, Ultra Gold, ARC, 1.65 Ratio, For Pontiac 265-455, 7/16 in. Stud, Each

COMP Cams Rocker Arm, Ultra Gold, ARC, 1.65 Ratio, For Pontiac 265-455, 7/16 in. Stud, Each

$68.74

COMP Cams Rocker Arm, Ultra Pro Magnum XD, 1.65 Ratio, For Chevrolet SBC w/ 3/8 in. Stud, Full Roller, Steel, Each

COMP Cams Rocker Arm, Ultra Pro Magnum XD, 1.65 Ratio, For Chevrolet SBC w/ 3/8 in. Stud, Full Roller, Steel, Each

$92.02

COMP Cams Rocker Arm, Ultra Pro Magnum XD, 1.6 Ratio, For Chevrolet V6 and SBC w/ 7/16 in. Stud, Full Roller, Steel, Each

COMP Cams Rocker Arm, Ultra Pro Magnum XD, 1.6 Ratio, For Chevrolet V6 and SBC w/ 7/16 in. Stud, Full Roller, Steel, Each

$89.70