COMP Ultra Pro Magnum XD Roller Rocker Arms, 7/16" Stud Dia, 1.7 Ratio (CO1820-16)

CO1820-16 - BBC ULTRA PRO MAGNUM XD 1.70:1

Suit Big Block Chevy

Part Number: CO1820-16

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
from 1.5 to 1.7 in .5 increments for Chevy and 1.6 to 1.7 for various Ford applications is available. These 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 new XD design utilises advanced
FEA and CAD design and development to improve strength, stiffness and MDI optimisation for drag and circle track applications.

Machined billet pushrod seat insert for wide range of rocker ratios used in popular Chevy and Ford applications
8650 Steel construction outlasts and outperforms other rockers in accuracy and strength

Precision-sorted needle bearings better distribute the load and reduce wear

Engineered for use in circle track and drag race applications