TeraFlex 4181000 TeraCRD60 HD 70-Inch Semi-Float Rear Axle Assembly 0-6 Inch Lift

The TeraFlex TeraCRD60 HD Rear Axle Assembly (Part #4181000) is a heavy-duty, semi-float rear axle housing engineered for the Jeep JT Gladiator — including Rubicon models. Built on a Spicer Super 60 platform, this unloaded assembly ships ready for your choice of ring & pinion gear ratio, locker, and carrier, making it a fully customizable foundation for serious off-road builds.

The housing is an ideal solution for replacing a bent, broken, or damaged factory axle, or as a direct bolt-on strength upgrade over the stock unit's known weak points. Its 70-inch wheel-mounting-surface-to-wheel-mounting-surface width delivers improved stability and stance for lifted builds running up to 6 inches of lift height.

TeraFlex's exclusive Constant Radius Design (CRD) is the key differentiator of this axle: it maintains consistent high ground clearance that remains unaffected by pinion angle adjustments — a critical advantage when running a lifted suspension. The housing is fully compatible with all Spicer Super 60 gear ratios, supporting extreme-duty applications that demand maximum ring & pinion strength.

What's Included:

• Spicer Super 60 bearings
• Semi-float rear axle shafts
• Sensors
• Heavy-duty axle housing with smooth profile surfaces
• Axle tubes, all necessary mount brackets, and control arm bushings

Key Specifications:

• Lift Range: 0–6 Inch
• Width (WMS-WMS): 70 Inch
• Axle Tube: 3.25 Inch O.D. x 0.375 Inch wall
• Axle Splines: 40

Important Notes:

• Ring & pinion gear ratio, locker, and carrier are not included — sold separately or as part of a loaded assembly variant
• Requires adjustable control arms for caster angle adjustments
• Related part numbers in this series: 4181430, 4181488, 4181538 (loaded configurations)