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 and upgrades. Backed by over 40 years of combined industry experience, our team brings a wealth of knowledge, precision, and passion to every project we take on.
At Gearhead Diffs, we know that a well-performing differential is the heart of any vehicle’s drivetrain. 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 you’re after a full differential rebuild, performance upgrade, or simply expert advice, our skilled technicians take pride in providing quality solutions tailored to your needs—backed by professional service and attention to detail that sets us apart in the industry.
