Monday to Friday- 7:45am – 5:00pm | Saturdays- 7:45am – 1pm


Welcome to Mayfair Gearbox, your one-stop solution for specialised I-Shift transmission repairs.

Image Depicting Mayfair Gearbox 30th Logo
Image depicting propshaft balancing.

We offer propshaft service & balancing.

Image depicting Gearbox is installed the same day in icon form

We stock service exchange units.

Image depicting Free collection and delivery nationwide in in icon form

Collection and delivery nationwide.

Image Depicting a Full drive train assessment in Icon form

Full drive train assessment.

I-Shift, renowned for its cutting-edge technology, boasts a rapid gearchanging system that minimizes any disruption in torque delivery, ensuring a seamlessly efficient transition between gears. This innovative gearbox is distinguished by its extensive ratio coverage, allowing it to accommodate both impressive starting traction and remarkable average speeds.


The brilliance of I-Shift lies in its ability to swiftly and smoothly shift gears, providing a driving experience characterized by uninterrupted power delivery. The advanced technology employed in this system ensures that the transition between gears is not only fast but also optimally timed, contributing to enhanced overall performance.


One of the key advantages of I-Shift is its remarkable ratio coverage, which enables the transmission to cater to a wide range of driving conditions. This versatility translates into the capability to deliver high starting traction, ensuring that the vehicle can efficiently accelerate from a standstill. Simultaneously, the gearbox's diff expansive ratio coverage allows for impressive average speeds, providing a smooth and dynamic driving experience across various speeds and terrains.


If you are in need of gearbox and diff repair, our expert technicians are equipped to handle the intricacies of I-Shift, ensuring its optimal functionality and longevity.

ABOUT US

Unlock the Full Potential of Your Truck with Specialized Repairs at Mayfair Gearbox! We offer comprehensive repair services for a range of Transmission models. Whether you're facing issues with gear selection, electronic controls, or overall performance, our team of skilled technicians has the expertise to get your transmission running like new. Don't compromise on performance—choose Mayfair Gearbox for all your I-Shift Transmission needs.



The I-Shift is known for its intelligent electronic control unit (ECU) that continuously monitors factors such as speed, load, road grade, and driver input to automatically select the best gear for the situation. This helps to optimize fuel consumption and extend the lifespan of the driveline components. The transmission also allows for manual overrides, giving drivers the flexibility to choose gears when they feel it's necessary.


  • A fully automatic gearchanging system allows high comfort and fuel-efficient driving.
  • The overdrive on the top gear, the engine’s economy rev band can be better exploited, leading to fuel savings and quieter operation.
  • The program package adapts the gearchanges to the prevailing transport conditions. 
  • Low weight with main box, range-change housing and clutch housing made of aluminium.
  • I-Shift is suitable for transport applications in all segments.


Automatic Gearbox Repair
Image Depicting an Allison Transmission


Fast gearchanging system with short torque interruption:

  • I-Shift is a very flexible gearchanging system. In Auto mode, gears change automatically even with the cruise control engaged. In sensitive driving conditions, the driver can switch to the Manual mode that locks the current gear.


  • I-Shift is approved for gross combination weights of up to 100 tonnes. This makes it suitable for long-haul operations, heavy construction applications and regional and urban transportation duties. An oil cooler, power take-off, compact retarder and emergency power steering pump can be fitted to the transmission.



Why Choose Mayfair Gearbox?


  • ✅ Quality: We are committed to delivering top-tier products and services that meet the highest standards of quality and reliability.


  • ✅ Timely Service: We understand the importance of keeping your trucks on the road. Our efficient processes ensure minimal downtime.


  • ✅ Tailored Solutions: Every truck is unique, and so are its gearbox needs. We provide personalized solutions that cater to your specific requirements.



Fleet Maintenance

At Mayfair Gearbox, we do it 'First Time Right'


When it comes to the specialized repair of I-Shift transmissions, Mayfair Gearbox stands as a trusted name in the industry. Choosing Mayfair Gearbox means investing in quality, reliability, and unparalleled customer service.


Get a Quote | Book a Free Diagnostic

Why are we the best in the industry?

1 DAY

turnaround time on exchange 
unit replacement.

 OVER 4000

exchange units nationally
to limit down time.

24 HOUR

Roadside Assistance
offered to all clients.

19 BRANCHES

nationwide coverage
across 4 countries.

Contact us: 011 872 2029

Tyron:  079 495 7224
E-Mail: tyron
@mfgb.co.za

Working Hours:

Monday - Thursday 7:30am–5pm

Friday    7:30am–4pm

Saturday 8am–1pm

Sunday   Closed

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