Ultra Pro Magnum XD Roller Rockers - (BB Chevrolet 1.73)
Stainless steel 1.73:1 ratio using 7/16" rocker studs
The next design evolution of the Hi-Tech™ 8650 steel alloy 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 push rod seat insert for a wide range of super accurate ratios.
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 utilizes advanced FEA and CAD design and development to improve strength, stiffness and MOI optimization for drag and circle track applications.
- Machined billet push rod seat insert for wide range of rocker ratios
- 8650 steel construction outlasts and outperforms other rockers in accuracy and strength
- Precision-sorted needle bearings better distribute the load and reduce wear for a longer service life
- Engineered for use in endurance, circle track and drag race applications with improved strength and durability
PART NUMBER: COMP-1823-16
