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Ultra Pro Magnum™

The Ultra Pro Magnum™ Roller Rocker Arms not only live up to the lofty standards of the original Pro Magnum™ Rockers, 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

  • Unique Black Oxide Exterior Finish Helps Prevent Corrosion

  • Arched, Weblike Body Reduces M.O.I. & Delivers Increased Strength & Rigidity

  • Oversized Trunnions, Precision-Sorted Needle Bearings & Hardened Roller Tips

  • Able To Withstand Valve Spring Pressures Up To 850 lbs.

  • Increased Retainer & Spring Clearances

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