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TeraFlex JK heavy duty replacement axles are the perfect solution for bent, broken or damaged front axles in JK Wrangler and Rubicon vehicles. The Tera30 offers a direct bolt-in upgrade for Jeep JK owners looking to beef up the weak areas of their front axle.

Click here for the complete Teraflex axle guide.

The replacement housing includes a heavy duty housing, tubes, axle bracketry, and forged inner knuckles. Pre-installed inner seals and upper control arm bushings make the upgrade seamless. Simply transfer your existing internal components, outer knuckle assembly, and brakes to the new housing!

  • Forged heavy duty inner knuckles with greater upper and lower section strength
  • 1/4” Thick CNC laser cut axle brackets for extreme strength

  • Reinforced front trackbar mount (ties into spring pad) for greater strength

  • Integrated lower flexarm skid plates

  • Pre-tapped hole on spring perch for bump stop extensions

  • Pre-drilled holes for limit straps and lower spring retainers

  • Heavy duty ductile iron differential cover

  • Axles seals pre-installed

  • Pre-installed upper control arm bushings

  • Retains all JK ESP, ABS & speedometer sensor capability

  • Proper pinion angle for lifted JK applications

  • Premium UV protected triple-stage powder coat process for superior corrosion resistance

  • Ductile cast iron housing with increased rib gussets

  • Smooth radius bottom design to glide over rocks & obstacles
  • Asymmetric housing design, for extra long tube side strength
  • Bottom oil drain hole for simple fluid changes
  • Integrated factory location upper control arm mount
  • 3.25” x 0.25” axle tube increases strength to resist bending and torsion with minimal weight increase
  • 3.25” x 0.5” extreme duty axle tube is available on select Tera44 models
  • Compatible with factory JK Rubicon locker (R44 model only)
  • Includes adapter fitting for ARB and Detroit lockers (TF44 model only)
  • 100% engineered, designed, and built in the USA
  • 100% new components
  • No Excuses warranty - 1 year, unlimited mileage


The Tera30 replacement housing is sold as an empty housing to reduce overall cost and is perfect for owners looking to upgrade only the axle housing. Swap over your differential w/R&P, axle shafts, outer knuckles, ball joints, and outer axle assembly (unit bearing, brakes, sensors).