Get a 4WD diff
upgraded, replaced or repaired

4WD differential workshop in Sydney

If you are a serious 4WD enthusiast and you start venturing into rough terrain you will quickly realise that the factory fitted differentials can become quite limited in their capabilities.

Our workshop in Sydney can repair, replace or upgrade your 4WD differential to give you better performance and more traction in all terrain conditions.

We also sell and install the latest diff lockers. Diff locks lock the left and right axle on the diff to prevent slippage and power being only sent to the wheel with no traction. The capability of your vehicle’s differential is essential to prevent wheels spinning at different speeds when doing off-road driving, turning, driving on slippery surfaces or uneven terrain.

4WD differential specialist




new diff





We sell products & accessories for all 4WD vehicle brands

Watch how a differential operates on your 4WD

Diff conversions

Our 4WD workshop in Sydney can carry out a diff conversion for any make or model of 4×4 vehicle.  We carry out differential conversions to remove a factory installed diff with an aftermarket product that is stronger & tougher.

We have trained staff with expertise to complete gearbox and differential conversions for manual 4WD vehicles in Sydney. We can advise on the required repairs, reconditioning, modification or conversion needed to achieve the application you require.

Using our state of the art equipment, all our work is carried out with precision to provide cost effective diff conversions for 4WD owners. We complete work for all manual vehicle makes and models, including front and rear wheel drives, 4WD and light commercial vehicles.

Diff rebuild cost

It is impossible to provide an answer for ‘How much does it cost to fix a broken diff?’ because there are millions of potential variables. Get in contact with us to talk about the make, model & type of diff you have so that we can estimate how much it would cost if it is broken.

It could be worth rebuilding the differential depending on your situation & the vehicle in question. Sometimes it is more cost effective to replace it completely. A diff can be reconditioned to extend its life and it should last for a long time, but this depends on how it is treated & the quality of the repair works.

The main reason differentials fail is due to wear and tear, you will know it is beginning to fail when you hear whining sounds, grinding or your vehicle simply stops moving. In most cases the components inside the diff become worn with age and require replacement.

Why upgrade your differential in your 4WD?

The differential isn’t something most people think about because it is just part of the 4WD’s drivetrain, you drive it and enjoy getting offroad. Although what the differential is doing is transferring the torque power produced by the engine to the wheels so that they can run at different speeds to maintain traction,. This will change depending on the situation and the terrain you are on.

Their are a variety of differential centers for different applications such as Single wheeler, True Trac, E locker, Kaaz locker, ARB locker etc. They essentially do the same thing which is sending torque from the engine to the differential via the transmission and tail shaft. They just have slightly different ways of doing it and it becomes important to maintain your whole drivetrain including the tail shaft, CV joints, universals and differential, especially if you are using your 4WD regularly for high demand driving.

Our 4WD workshop in Narellan can manage jobs that include diff repairs, 9 inch conversions, custom built diffs, custom built axles, axle splining, straightening and shortening, custom built tail shaft, tail shaft recondition/repair and gear ratio changes.

ELocker installations in Sydney

Our 4WD workshop in Sydney can supply and install the Harrop ELocker range of products. It has become one of the most popular upgrades for 4WD owners because ot its unrivalled traction, functionality and durabilit.

As a Harrop ELocker installer in Sydney we are impressed by its high quality differential technology that uses an innovative electromagnetic locking mechanism. You can go from an an open diff centre operation to locked in the flick of a switch. 

You don’t need air lines, a compressor or anything else. The ELocker is an electronic solution for any model of 4WD. When locked the Harrop Eaton ELocker performs as a full locker, capturing 100% of the available torque and sending it equally to both ends of the axle.

It has precision-forged gears that are designed to mesh perfectly, providing improved strength and durability over a standard cut gear and is perfect for all traction off-road performance applications and some of the benefits include;

  • Enhances towing and off-road performance
  • Patented positive-electronic locking
  • Precision-forged gears
  • 4 Pinion design
  • Superior re-buildable design
  • Requires no external module, compressor or hoses
  • Push button traction
See some of our recent 4WD builds and custom fit outs.

Deal with enthusiasts

The staff at Adrenalin Off-Road will also provide advice on the right camping or recovery equipment that may be suitable for the types of locations you are thinking about driving to. We don’t just sell and install a bull bar with a wave good bye, our team will make sure you have everything you need to be safe, able to recover your vehicle and return home safely.

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for your 4WD vehicle