The new Ultra Pro Magnum™ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnums™, but they also take stud mount rocker performance, stability and value to a whole new level. The modern arched, web-like design delivers increased strength and rigidity while still reducing the moment of inertia and optimizing the dynamic balance.
Investment cast 8650 chromemoly body and arched, web-like design increase strength and rigidity while reducing moment of inertia
- Unique black oxide exterior finish helps prevent corrosion, thus increasing durability
- Optimized retainer and valve spring clearances allow use of most diameter springs, retainers and +.050″ locks without clearance or fitment issues
- Feature oversized trunions, precision-sorted needle bearings and hardened roller tips