About Us
Founded in 2021 by George Bull in Christchurch, New Zealand, Gearhead Diffs has quickly grown into one of the country’s leading specialists in differential repair people trust for precision work and honest advice. Backed by over 50 years of combined industry experience, our team brings a wealth of knowledge, precision, and passion to every project we take on.
Why differentials matter
At Gearhead Diffs, we know that a well-performing differential is the heart of any vehicle’s drivetrain. A diff that’s worn or set up incorrectly rarely stays a small problem. It can create noise, affect handling, and lead to a much more expensive fix if left unchecked. That’s why we’re committed to delivering the highest level of craftsmanship and expertise, ensuring your vehicle runs smoothly, reliably, and at its best, whether it’s a daily driver, a tow rig, or a dedicated track or off-road build.
What we do
Whether you’re after a full differential rebuild, a performance upgrade, gear ratio changes, or simply expert advice, our skilled technicians take pride in providing quality solutions tailored to your needs. From diagnosis through to final testing, every job is backed by professional service and the kind of attention to detail that sets us apart in the industry.
Get in touch
If your vehicle is due for a diff service, upgrade, or inspection, get in touch with our team or browse our services to see how Gearhead Diffs can help keep your drivetrain in top shape.