Shifting Gears Automotive logo - performance
Gearbox, transmission and automotive repair specialists
112d Ellis Street, Frankton, Hamilton

Specialist transmission and drivetrain repairs

About Shifting Gears Automotive: Shifting Gears Automotive is a Hamilton transmission and drivetrain specialist providing in-house transmission, gearbox and differential repairs and rebuilds. Learn more.
Owner Gary Ririnui brings more than 20 years of hands-on experience and trained as a gearbox rebuilder. He remains closely involved in the workshop, where transmissions, gearboxes and diffs are diagnosed, stripped and rebuilt in-house.
The team also handles clutch repairs and general car servicing and repairs, with clear advice on what needs attention and what can wait.
Arrange a booking or contact the workshop to discuss your vehicle.
Red muscle car undergoing performance drivetrain work at Shifting Gears Automotive Hamilton
Performance Transmission & Drive Train Upgrades
Performance transmission and drivetrain upgrades are planned around the vehicle’s power, torque and intended use, with options including transmission, gearbox, clutch, differential, ratio and cooling upgrades for modified, classic, track and towing vehicles.
Manual gearbox undergoing internal repair at Shifting Gears Automotive Hamilton
Manual Gearbox & Differential Repairs
Manual gearbox and differential repairs include rebuilds, clutch replacement, transfer cases, differential repairs, limited-slip diff work and ratio changes.
utomatic transmission rebuild for servicing at Shifting Gears Automotive Hamilton
Automatic Transmission Repairs & Rebuilds
Automatic transmission repairs and rebuilds cover fault diagnosis, transmission servicing, CVT and DSG work, targeted repairs and complete in-house rebuilds.

Ready to get Started?

Book in your service via our online booking form.You’ll receive confirmation when your request is confirmed by our workshop.
"I had a great experience with Shifting Gears Automotive. The team is friendly, professional, and genuinely knows their stuff. They took the time to explain everything clearly and made the whole process smooth and stress-free. The service was efficient, honest, and well priced, with excellent attention to detail.
I highly recommend Shifting Gears Automotive to anyone looking for reliable and trustworthy service. Will definitely be coming back!"
Ritesh Kumar
"I recently dropped two diffs off to Gary to have one LSD built. His attention to detail and understanding what I wanted was evident in his work. So stoked I chose to go here and will definitely take any other projects I have to him! I was so happy with the job, I put the diff in and drove down to the shop the next day!"
Shaun Perry
"Cannot recommend Shifting Gear highly enough. Gary and Christine are incredibly professional, friendly, and an absolute pleasure to deal with from start to finish. The service, quality of work, and overall vibe were top-notch. You can tell they really care about what they do. Massive thanks to the whole team — highly recommend!"
Mike Fitnes
"Highly recommended they do an excellent job, Great communication witch is important to me. I drop my car off and go for a walk around tge lake or to town while service is getting done. I will be taking all my cars here from now on."
Danielle Hansen

Why Choose Shifting Gears Automotive?

Specialist Knowledge
More than 20 years of hands-on automotive experience and specialist knowledge in transmissions and drivetrains.
Specialist drivetrain work
Automatic transmissions, manual gearboxes, differentials and transfer cases can be repaired and rebuilt in the workshop rather than routinely sent elsewhere.
Everyday vehicles welcome
Alongside specialist drivetrain work, the team handles servicing, brakes, diagnostics, clutch repairs and general mechanical work for daily drivers and work vehicles.
Repair options explained clearly
You are told what needs attention now, what can wait and where completing another repair at the same time could save labour later.
Vehicle diagnostic testing and mechanical servicing at Shifting Gears Automotive Hamilton
Vehicle servicing and repairs cover regular maintenance, brakes, wheel bearings, batteries, belts, cooling systems, vehicle diagnostics, leak checks and general car repairs.
Gearbox, transmission and automotive repair specialists
Hamilton/Frankton