The Synergy MFG warehouse will be closed June 22 - 26 for Inventory. ALL orders placed during this time will resume shipping on June 29th.

Synergy D30/D44 Inner Axle Sleeve Kit

Part #: 8112-XX
Weight: 20 lbs
  • MSRP: $235.00
Purchase through our Dealer Network.
Northridge4x4 4Wheel Drive Hardware 4 Wheel Parts QUADRATEC SDHQ ORW - Off Road Warehouse CJC Offroad HB Performance OC Motorsports

*Not all products available from each dealer. For a list of international dealers click here.

  • Weight
    20 lbs
  • SKU

The Axle Assurance Kit is designed to strengthen the D30/D44 front axle found in the front of the Jeep TJ, LJ, XJ, and ZJ before it is bent/broken from the abuses of large tires and off road use. The Inner Axle Sleeves provide a 59% increase in strength over the stock axle tubes by being machined to fit snugly inside, increasing the overall tube thickness. The Inner C Gussets are laser cut and CNC bent in a heavy duty 3-sided construction to reinforce the Inner C's in the two planes prone to bending. The Lower Control Arm Skids are also laser cut and CNC bent to provide a very rigid bracket protecting the lower control arms and axle mounts. We also recommend the installation of our HD Ball Joints at this time to further extend the life of the axle.

D30 Kit Includes:

D44 Kit Includes:

  • (1) 8112-02 Inner C-Gusset Kit (D44)
  • (1) 8112-07 FLCA Skid Plates
  • (1) 8012-09 D44 Inner Axle Sleeve Kit
  • (1) 8009-13 03-06 TJ/LJ D30/44 Axle Housing - Inner Axle Seals


  • 4120 Jeep YJ/TJ/LJ, 90-01 Jeep XJ, 93-98 Jeep ZJ HD Ball Joint Set
  • 8009-13 Jeep TJ/LJ 03-06 D30/44 Axle Housing - Inner Axle Seals
Part #DescriptionFitment
8112-50-30Jeep Front Axle Assurance Kit for D30TJ/LJ, XJ, ZJ
8112-50-44Jeep Front Axle Assurance Kit for D4403-06 TJ/LJ Rubicon
WARNING: Operating, servicing and maintaining a passenger vehicle or off-road vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle.
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