Ultra Pro Magnum XD Rocker w/ 1.55 Ratio for Chevrolet V6 and SBC w/ 7/16" Stud
Machined from 8650 steel with a billet pushrod seat, these Ultra Pro Magnum XD rockers can handle up to 1,000 lbs of spring pressure. This 1808 rocker features a 1.55 ratio for use with 7/16" stud Chevrolet V6 and 265-400 Small Block.
The Ultra Pro Magnum™ XD Rocker Arms are engineered from durable 8650 Steel that outlasts and outperforms other inferior knock-off and import Rockers. A unique machined billet Pushrod seat insert offers exceptional durability. These new Stud mount Rockers are fully rebuildable and use precision-sorted needle bearings and hardened Roller tips to better distribute the load and reduce wear for a longer service life. In addition, 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 optimization for endurance, drag and circle track Applications.
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 1.8 in .5" increments for Chevy and 1.6 to 1.73 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 XD design utilizes advance FEA and CAD design and development to improve strength, stiffness and MOI (moment of inertia) optimization for drag and circle track applications.
- Precision-sorted needle bearings and hardened roller tips better distribute the load and reduce wear
- For applications with up to 1000 lbs. open spring pressure
- Engineered for use in circle track and drag race applications
- 8650 Steel construction outlasts and outperforms other rockers in accuracy and strength
- Machined billet pushrod seat insert for wide range of rocker ratios used in popular Chevy and Ford applications
