Atomic Barra Heavy Duty Roller Rockers
Atomic Barra Heavy Duty Roller Rockers
Atomic Heavy Duty Roller Rockers – Ford Barra DOHC | High RPM | Big Cam & Boost Ready
Atomic Heavy Duty Roller Rockers – Ford Barra DOHC | High RPM | Big Cam & Boost Ready
Atomic Heavy Duty Roller Rockers – Ford Barra DOHC | High RPM | Big Cam & Boost Ready
Atomic Heavy Duty Roller Rockers – Ford Barra DOHC | High RPM | Big Cam & Boost Ready
Load image into Gallery viewer, Atomic Barra Heavy Duty Roller Rockers
Load image into Gallery viewer, Atomic Barra Heavy Duty Roller Rockers
Load image into Gallery viewer, Atomic Heavy Duty Roller Rockers – Ford Barra DOHC | High RPM | Big Cam & Boost Ready
Load image into Gallery viewer, Atomic Heavy Duty Roller Rockers – Ford Barra DOHC | High RPM | Big Cam & Boost Ready
Load image into Gallery viewer, Atomic Heavy Duty Roller Rockers – Ford Barra DOHC | High RPM | Big Cam & Boost Ready
Load image into Gallery viewer, Atomic Heavy Duty Roller Rockers – Ford Barra DOHC | High RPM | Big Cam & Boost Ready

SKU: 306581-24

Atomic Barra Heavy Duty Roller Rockers

$1,249.00 AUD
$1,249.00 AUD
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This is a pre order item. We will ship it when it comes in stock.

Atomic HD Double Roller Rockers

The Ultimate Upgrade for Discontinued Factory Parts

The Problem: Factory Parts are Gone

Genuine Ford Barra rocker arms are officially discontinued (NLA). You simply cannot buy them new anymore. This leaves engine builders with a difficult choice: reuse tired, high-mileage rockers that have been subjected to years of wear, or find a superior aftermarket solution.

💡 DID YOU KNOW?

Friction kills valve guides. Standard rockers slide across the valve tip, creating side-loading friction that wears out valve guides over time. Our Double Roller design puts a roller bearing on both the cam follower and the valve tip, converting that sliding friction into smooth rolling motion for ultimate refinement.

The Atomic Solution

The Atomic HD Roller Rocker is not just a replacement; it's an evolution. Featuring a robust "Double Roller" architecture, these rockers reduce valvetrain friction, lower oil temperatures, and provide the structural strength needed for heavy valve springs and high-lift cams. It is the definitive solution for anyone wanting to future-proof their Barra head.


Double Roller Design: Roller Tip + Roller Follower.

Direct replacement fitment for Barra DOHC.

2. Engineered for Refinement

For builders who want the smoothest possible engine operation, minimizing friction is key.

  • Roller Tip Technology: Eliminates the "scrubbing" action of the factory pad on the valve stem, significantly extending valve guide life.
  • Reduced Friction: Frees up horsepower and reduces heat generation in the cylinder head.
  • High Strength Body: Designed to withstand the increased spring pressures of Stage 3+ valve springs without flexing or fatigue.

Tech Specs

Design: Double Roller (Cam & Valve Tip)
Ratio: Standard Factory Geometry
Quantity: Full Set of 24 Rockers
Application: Ford Barra DOHC 4.0L (BA-FGX)

⚠️ Installation Notes

  • Clearance Check: While designed as a direct replacement, always check clearance with aftermarket retainers or extremely large camshafts.
  • Lubrication: Pre-soak rockers in engine oil prior to installation to ensure bearings are lubricated on first startup.
  • Lifter Preload: Ensure your lifter preload is correctly set (using shims or Atomic Anti-Pump Lifters) to account for any geometry changes in the head (e.g. valve tip height or deck machining).
  • Valve spring Recommendations: Due to the slight additional weight on the valve tip we recommend ~+10lbs spring pressure compared to a standard weight rocker arm. We would suggest 110-120lbs for most set ups with these rockers.