Atomic - Barra ATI Balancer Kit | Race Balancer
The Ford Barra 4.0L is an incredible engine, but its long stroke creates severe harmonic vibrations at high RPM. These harmonics are destructive. We frequently see engines with loose flexplates, sheared flywheel bolts, and damaged oil pumps and timing components—even on builds with dowelled cranks. The factory balancer (and all aftermarket replacements except ATI) simply cannot absorb these torsional spikes beyond 700whp.
Harmonics loosen bolts. We have seen engines where the flexplate repeatedly came loose, despite being dowelled and nordlock washers + Loctited. As soon as an ATI Super Damper was installed, the problem vanished instantly. That is the difference proper harmonic damping makes.
We believe the ATI Super Damper is the single most important upgrade for any high-power Barra. By absorbing torsional twist directly at the crank snout, it protects your entire engine—from the oil pump gears to the timing chain guides. We've seen engines run smoother, idle quieter, and stop breaking parts immediately after installation. No other brand is adequate for serious builds.
2. The "Atomic Hub" Difference
An ATI damper is only as good as the hub it sits on. We don't use generic adapters.
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Australian Made Precision: Our custom hubs are manufactured right here in Sydney to aerospace standards.
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Complex Machining: Each hub undergoes a multi-stage machining and heat-treatment process to ensure maximum strength.
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Precision Ground Finish: The final step is precision grinding to achieve ultimate roundness and smoothness. This guarantees a perfectly central, interference fit on the crank snout with zero play or runout.
Tech Specs
Damper: Genuine ATI Super Damper Shell
Hub: Atomic Precision Ground Billet Steel (Heat Treated)
Bolt: Custom machined billet steel bolt and washer
Rating: 2000hp+ / 8500+ RPM
Application: Ford Barra DOHC 4.0L (BA-FGX)
Installation Notes
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Interference Fit: Due to the precision machining, the hub is designed for a tight interference fit. You MUST heat the hub to 80°C (in boiling water or an oven) before installation to expand it slightly, allowing it to slide onto the crank snout without damage.
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Keyway Check: Ensure your crank keyway is in good condition. We recommend replacing the woodruff key during installation.
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Belt Alignment: Verify belt alignment with your accessories after installation to ensure the damper is fully seated.
