Detroit Lockers are born and bred right here in the United States. Detroit Lockers are the automatic, positive locking differential that has successfully driven more vehicles over more types of terrain than any other traction differential in its class. Detroit Lockers offer a positive gear action where no clutches are used to engage the axles. Its automatic operation works easily in both reverse and forward. And its special design minimizes shock loads created under stress. The pressure or stress can be transferred directly to your driveline sometimes causing or hastening early failure. The bottom line for all Detroit Locker products is that they are TOUGH...PERIOD!
The New Premium
Detroit Truetrac

Torque Proportioning Differential



For serious off-road performance, nothing compares with the combined effectiveness delivered by a Detroit Truetrac/ Detroit Locker package. With a Locker installed in the rear axle and a Truetrac up front, you'll experience unmatched spinout-free vehicle traction for maximum off-road excitement.

Positive Gear Action
   Detroit Truetrac is the only unit currently availale to the aftermarket featuring a gear-type limited slip design (no clutch or friction plates to wear out) Designed for medium-duty 2WD and 4WD applications, this positive gear action provides a quiet, automatic splitting of torque, without creating the steering problems associated with other traction diffs. It's so smooth that power transfer goes literally unnoticed by the driver...in fact, there's no hint of resistance int the steering wheel, even in front drive steering axles!.

  • Improved design performs like standar (open) differential in normal driving...until you need it.
  • Limits wheel spin on wet, muddy and icy terrain for maximum traction.
  • Improves handlling and increases tread life by allowing differences in wheel spped when turning or operating on uneven surfaces.
  • Depenable, rugged automatic system.
  • Smooth operation - even in front drive steering axles.
  • Features positive gear action - no friction plates.
  • No special lubricants required.
  • Proven inthousand of installations
  • Easy to install, no special tools or case modifications.

The Diffrential : The Key 4WD
      When you purchase four wheel-drive, what you're really buying is tranction - the ability to keep going in mud and snow, over rocks and ruts. But the real key to traction is found in the diffrential...the piece of hardware that distributes the torque to each axle shaft, allowing diffrences in whhel speed when the vehicle turns or travels on uneven surfaces.
     Without a diffrential, all four wheels would turn at equal speed around corners. Tires would skid and axle shafts would actually work againts each other. In such a "locked" position, you would be incapable of negotiating left or right turns without scuffing your tires (producing excessive tread wear) and potentially damaging the axle shafts. To alleviate these problems, all four-wheel and two-wheel drive vehicles feature conventional diffrentials.
     Unfortunatelay, conventional differentials have a severe limitation: when you encounter a loose traction surface, a standard "diff" directs power to the wheel with the least resistance. The result: the wheel on the loose surfaes spins furiously, while the opposite wheel, on a better traction surface, literally stands stiil... and so do you! Your stuck!

The Finest On & Off-Road
     There are a number of positive-traction and limited slip diffrentials on the market that can help deliver traction on loose surfaces...but none offer the features, durability, performance and automatic operation of Detroit Truetrac.
Eazy Installation
    Detroit Truetrac is quickly and easily installed using a simple bolt-in process, which takes only a few hours by an experience mechanic.
Automatic Operation
    Detroit Truetrac performs like a standard (open) differential under normal highway driving conditions...until you need it Then it automatically engages (no buttons or switheds to manually engage) when you normally would experience wheel spin on wet, muddy or icy terrain. This provides improved handling and increased traction, furnishes an added measure of passengger safety and vehicle control, and increases the tread life of our tires.
Rugged Simplicity, Long-Life Durability
   With its dependable automatic operation,  Detroit Truetrac reduces axle stress and shockloads.
And because of its own rugged design, Detroit Truetrac requires no service adjusments, special lubricants or friction midifier addtives

Compare !
Feature For Feature
Dollar For Dollar, No
Other Diff Offers The
Quality Performance
& Durability Of
Detroit Truetrac

Proven Performance Application Flexibility
    Detroit Truetrac has proven itself in thousands of installations, including :

  • Light 2WD and 4WD vehicles.
  • Jeep and other off-road 4WD vehicles.
  • Pickup trucks in both commercial and recreational service.


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