The TeraFlex Tera44 heavy duty JK Rubicon replacement axle (R44) is the perfect solution for bent, broken or damaged front axles in JK Wrangler Rubicon vehicles. The Tera44 is a direct bolt-in upgrade for Jeep JK owners looking to beef up one of the weak areas of their Jeep. The differential center section is engineered for extreme use and is constructed with increased rib gussets in a ductile cast iron housing. The smooth radius bottom is designed to glide over rocks & obstacles, and incorporates a bottom oil drain hole for simple fluid changes. By integrating the upper control arm mount in the factory location on the housing unnecessary bracketry is eliminated. By increasing the axle tube diameter to the largest in the industry, the 3.25” OD x 0.5” wall DOM tubing make axle bending and breaking a thing of the past and is no longer a concern. Redesigned forged inner knuckles increase section strength to eliminate ball joint separation. The replacement axle housing assembly includes the Tera44 center section, 3.25” OD tubes, 1/4” Thick CNC laser cut axle brackets with integrated lower bracket skid plates, reinforced front trackbar mount (ties into spring pad) for greater strength, and forged inner knuckles. Pre-installed inner seals and upper control arm bushings make the upgrade seamless. A Premium UV protected triple-stage powder coat process provides superior corrosion resistance. Simply transfer your existing internal components, outer knuckle assembly, and brakes to the new housing! The Tera44 retains all JK ESP, ABS & Speedometer sensor capability, and maintains the factory JK Rubicon locker (R44 model only). The Tera44 is 100% engineered, designed, and hand assembled in the USA with 100% new components. The Tera44 comes with a 1 year unlimited mileage, No Excuses warranty. Note: There are two versions of the Tera44 available for JK Wranglers; Tera44 R44= Direct replacement for the factory JK Rubicon Dana 44 housing (re-using factory locker & shafts). Tera44 T44= JK Wrangler upgrade housing (not re-using factory locker or shafts). Fits JK Rubicons with 4+" of lift, and factory Rubicon 44 axle.