Light Duty Limited Slips/Lockers


twolockersGears & Rears
carries many individual parts and kits for most automotive differentials including Quality Gear, Eaton, Spicer, Richmond, GM, Ford and many more. Our specialty is traction components as we are authorized Master Distributors for Eaton and Auburn Gear. Below are the types of lockers you can choose as per your application and requirement.

Light Duty Locker Types:

Automatic Locker

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Above: Detroit Locker from Eaton

Operation

In an automatic locker the unit delivers 100% of the torque and power to both drive wheels. During straight line travel, the drive axle operates as if the axle shafts are welded together. The axle shafts will move at least as fast as the ring gear and all of the engine’s power will reach the ground. Both wheels turn at the same speed even if one wheel lifts off the ground. An automatic locker will unlock when turning corners.

Applications

Serious 4×4 enthusiasts who are in severe off-road terrain, crossing from rock to rock with wheels in the air or travelling through deep mud, muskeg, water, swamp or snow should run an automatic locker.

Advantages

Traction is far superior to limited slip or conventional differentials.

Brands We Carry

  • Eaton (Detroit Locker)

Torsen Differential

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Above: Eaton Truetrac

Operation

A torsen differential is a sensitive, torque biasing traction differential consisting of 2 planetary gear sets connected by the overlapping mesh of a pair of helical pinion gears. When a vehicle encounters wet, muddy or icy conditions, this gear type limited slip differential (no clutch or friction plates to wear out) allows for power to be transmitted to the high traction wheel instead of to the spinning wheel.

Applications

With this type of differential the smooth power transfer provides a quiet operation without any steering issues. This unit is well suited to front drive steer axles. It is often spec’d to be used in the front of a 4×4 snowplow. Serious 4×4 enthusiasts will often run an automatic locker in the rear and a torsen differential in the front axle. Racers often run a spool in the rear axle with the torsen again in the front axle. It can also be found in a front axle of a 4×4 farm tractor (75 to 300 hp).

Advantages

The torsen is a very economical unit as compared to the clutch pack type differentials. The smooth and quiet operation will be suited for customers who are opposed to the noise and handling characteristics of a locker.

Brands We Carry

  • Eaton (Truetrac)
  • GM
  • Dodge
  • AAM

EZ-Locker (Lunch Box Locker)

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Operation

The EZ-locker is a fully automatic, positive locking differential. Similar to the automatic locker, this unit delivers 100% of the torque and power to both drive wheels.

Applications

The EZ-locker differential works well for the occasional off-roader who wants a locker but will not be pushing their vehicle to the absolute limit.

Advantages

The EZ-locker is economical and can be installed easily within a few hours, generally without any special tools.

Brands We Carry

  • Power Trax
  • LockRight

Clutch Pack Style Differential

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Above: Eaton Posi

Operation

A clutch pack style differential uses carbon fiber discs and four preload springs to offer chatter free operation. As the input torque increases so does the clamping force on the clutch packs.

Applications

The clutch pack style differential can be used in everything from your daily driver to your hot rod, and it is capable of handling high horsepower and mild off-road conditions.

Advantages

The clutch pack style differential is made with a high strength case, precision forged gears and carbon fiber clutch packs. It is also completely rebuildable.

Brands We Carry

  • Eaton Posi
  • GMC/Chevy – Positraction
  • Chrysler – Sure Grip
  • Spicer – Trak-Lok/Power-Lok
  • Ford – Equa-Lock/Traction lock
  • Oldsmobile – Anti Spin
  • Pontiac – Safe-T-Track
  • AMC – Twin Grip

Selectable Air Locking Differential

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Above: ARB Selectable Air Locker

Operation

The selectable locking differential is an On-Demand Locker. It works as an “open” differential until the driver activates the locker from inside the cab and locks up the differential via air pressure. By doing this it equally splits the torque between each wheel all the time and they will turn at the same speed. Air Lockers also tend to freeze up in the winter because of the humidity of the air inside the locker.

Applications

Serious 4×4 enthusiasts who are into severe off-roading – eg. crossing from rock to rock with one or more wheels in the air or traveling through deep mud, muskeg, water, or swamps and still want to keep the factory handling when they are on paved roads should run a selectable locking differential.

Advantages

The Air Locker provides 100% traction on demand, without sacrificing any of the vehicle’s highway driving performance. It also offers significant environmental benefits. An Air Locker equipped vehicle can be driven in a slower, safer and more controlled manner, greatly reducing the likelihood of vehicle damage and environmental impact.

Brands We Carry

  • ARB Air Locker

Selectable Electric Locking Differential

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Above: Auburn Gear’s ECTED Selectable Electric Locker

Operation

The selectable locking differential is an On-Demand Locker. It works as an “open or posi” differential until the driver activates the locker from inside the cab and locks up the differential via electro magnet. By doing this it equally splits the torque between each wheel all the time and they will turn at the same speed. When unlocked, it operates just like a conventional ‘open or posi’ differential. If power to the magnet is lost, the differential will unlock and remain unlocked until power is restored.

Applications

Serious 4×4 enthusiasts who are into severe off-roading – eg. crossing from rock to rock with one or more wheels in the air or traveling through deep mud, muskeg, water, or swamps and still want to keep the factory handling when they are on paved roads should run a selectable locking differential.

Advantages

A selectable locking differential can be used in either the front or rear differentials. The driver has control over when to engage or disengage the locker from within the vehicle.

Brands We Carry

  • Eaton ELocker
  • Auburn Gear ECTED Max

 

Cone Style Differential

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Operation

The cone style differential works as a limited slip differential. The pretension springs firmly seat the tapered side gears to the case. During cornering the gear separating forces within the differential decreases and allows the outside gear to rotate independently.

Applications

Cone style differentials can be used for your daily driver, hot rods, muscle cars, high horsepower vehicles, 2WD trucks, and mild off road conditions.

Advantages

A cone style has less working parts and is capable of handling high horsepower.

Brands We Carry

  • Auburn Gear