DIFFERENTIALS
Performance Ford 9 Inch Diff Specialists
Superformance supplies, fabricates, and installs Ford 9" differentials, axles, centres, housing, and any other performance differential components.
Built for Strength, Engineered for Precision
At Superformance, we don't just sell drop-in differentials from leading brands. We also design, customise, and hand-build aftermarket differentials to your exact needs. From the housing to the axles, from the centre design to the gear ratio, every component is meticulously engineered in-house for unmatched performance, durability, and style.
Whether you're chasing street reliability, track-ready strength, or an all-out drag racing build, our team delivers made-to-order precision with no compromise on quality.
Brands of components we use
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Why Choose a Ford 9-Inch Diff?
Strong. Versatile. Legendary.
When high horsepower meets big tyres, factory rear axles often fail - but a premium quality built 9-inch is designed to take the punishment. The Ford 9-inch is one of the most popular axles in automotive history, and remains the benchmark for performance vehicles across Australia and the USA.
Superformance differential builds combine:
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Heavy duty brute strength and long-term reliability
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A removable third member for fast gear changes and easy servicing
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Endless combinations of centres, axles, housings, and gear ratios to suit any street, strip, or off-road application
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Tailored to Your Drive
Every 9-inch diff Superformance supplies will match your exact specifications and application. We offer:
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Genuine Eaton True Trac, Mini Spool, Full Spool, or Detroit Locker Centres
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Motive or Richmond aftermarket gear sets with street ratios from 3.0 to 4.11 and racing ratios from 4.56 up to 6.5
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Custom widths, narrowed housings, and multiple housing end and bearing options.
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Heavy-duty upgrades like fabricated housings, 35 or 40 spline axles, heavy duty alloy thru-bolt cases, thick pinion supports and more.
Whether you need a bolt-in replacement or a fully customised differential assembly, we ensure quality comes first.
Expert Manufacturing & Modification
Installing or modifying a 9-inch diff requires absolute precision. The smallest error in setup can cause major handling and driveline issues, which can be a pain to troubleshoot.
That’s why Superformance offers full fabrication, welding, and installation services right here in Brisbane. Our 9-inch diffs are jig-built and fixture-welded with precision and each unit is built to order for perfect fitment, alignment, and performance. Don’t take a chance with other aftermarket companies – come straight to the experts for differentials.
We specialise in:
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Swapping Ford 9-inch diffs into a wide range of vehicles
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Tailshaft modifications for correct fitment
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Brake system compatibility and disc brake conversions
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Off-the-shelf or custom-built assemblies for street and race applications

Your Differential. Your Way.
From off-the-shelf bolt-ins to engineered performance builds, every Superformance differential is backed by our commitment to quality, attention to detail, and precision craftsmanship.
Don't wait for another broken axle or failed centre. Upgrade your car to a 9-inch that's built for your power, your style, and your goals.
Interested in getting some axles made up? Have a look at our axle measuring guide (.pdf)
To enquire about your differential needs, please contact us today.


