Industry's top selling steel roller rocker arms have been completely redesigned for reduced weight and greater strength, yielding increased valve train stability
The original Pro Magnum™ stud mount rocker arm design has been the
standard of the industry for almost 20 years, but recent advancements in
design capabilities and steel casting processes have paved the way for a
"clean sheet" redesign. Utilizing years of valve train design
experience, the latest FEA stress analysis technology and an exhaustive
testing regiment (dyno & Spintron®), the COMP Cams® engineering team
left no detail to chance. Everything from casting techniques to valve
spring clearance was scrutinized to ensure that the new Ultra Pro
Magnum™ Rocker Arms not only live up to the lofty standards of their
predecessor but also took stud mount rocker performance, stability and
value to a whole new level. Consider the mission accomplished.
The most noticeable advancement with the COMP Cams® Ultra Pro Magnum™
Rocker Arms centers around their nearly unbreakable investment cast
8650 chromemoly body. The arched, web-like design delivers a nearly 29%
increase in strength and rigidity while reducing the moment of inertia
and optimizing the dynamic balance. The resulting rocker maximizes lift
and valve train control at high rpm. The increased retainer and valve
spring clearances of the new design enable the use of large diameter
valve springs, retainers and locks without clearance or fitment issues.
As further testament to the strength of this design, COMP Cams® includes
a lifetime guarantee against the breakage of the rocker arm body for
any reason.
Even the fit and finish of this innovative new rocker from COMP Cams®
provides its advantages. The new black oxide exterior finish offers a
distinctive appearance along with long term corrosion resistance.
The Ultra Pro Magnum™ Rocker Arms from COMP Cams® feature an
oversized trunion and precision-sorted needle bearings for use with high
load valve springs. Additionally, these unique rockers also feature
hardened roller tips for reduced friction and elimination of the valve
stem "side loading" that causes premature valve guide wear. And like the
previous generation Pro Magnums™, these new rockers feature a fully
rebuildable design that means they very well may be the last rocker arms
you ever have to purchase.