• Full-float design
- Vehicle weight carried by housing instead of shaft
- Delivers greater load-carrying ability
• 35 spline 4340 Chromoly axle shafts
• Genuine Made in the USA Spicer 9¾" (248 mm) ring and pinion gear inside
• Selectable electronic locking differentials (ARB Available)
• Heavy-duty 8 x 6.5" wheel bolt pattern
• Nodular iron diff cover
• Spicer® 1350 Strap-style/Half-round end yoke
• Axle tubes: 3½" tube diameter/.390" wall thickness
• Upgraded heavy-duty brakes with plug-and-play ABS system
- Massive vented rotors (358mm/14.09" O.D.) and dual piston calipers for optimal braking power and optimal cooling
More information can be found here