~(550 lbs. 84X24X24)~ Pro Rock 80 Rear Axle Assembly ARB Air Locker 4.88 RandP 1410 Yoke 68.5 Width 8 on 6.5 Brackets 40 Spline - 2007-2018 Jeep JK

The Dynatrac Elite™ ProRock XD60®/80 Axle-Set is described as the "very best 4WD drivetrain technology that money can buy," offering superior strength and durability. It is a U.S.-made, lightweight, bolt-in unit with excellent ground clearance. This axle set is designed for Jeep Wrangler JK owners who demand the best drivetrain quality and extreme performance, especially when running tires from 37- to 44-inches in diameter. It's ideal for highly experienced off-road drivers engaging in technical off-roading and for large JK builds with high-performance engine swaps, superchargers, high-torque diesel engine swaps, deep gear reduction, and transfer case ratios numerically higher than 4:1.

The set includes:
* **ProRock XD60® Front Axle:** Features a patented nodular-iron, high-pinion ProRock XD60® centersection, 3.75-inch diameter variable wall thickness tubing, Dynatrac-exclusive U.S.-made forged, double-heat-treated 1550 35-spline axle shaft assemblies, 1550LT® knuckles with Dynatrac HD BallJoints™, forged 4140 heat-treated fixed spindles, 13.25-inch brake upgrade with dual-piston calipers and vented rotors, integrated track bar and ram-assist steering mounting, HD tie rod, integral steering arm, Dynatrac DHD™ drag-link sleeve, control arm bushings, CNC laser-cut HD suspension brackets, DynaLoc™ locking hubs, ARB Air Locker, and choice of 4.88, 5.13 or 5.38 gears.
* **ProRock 80™ Full-Float Rear Axle:** Features a nodular-iron, standard-cut, high-rigidity housing, patented ProRock® ground clearance, 4-inch-diameter variable wall thickness chromoly tubing, Dynatrac 40-spline, full-floating wheel ends with heat-treated 4140 fixed spindles, high-capacity wheel bearings, 12-bolt flanged floater wheel hubs, U.S.-made forged, heat-treated, 40-spline, full-floating 4340 alloy-steel shafts, 13.88-inch brake upgrade with single-piston calipers and 8-on-6.5 wheel bolt pattern, rock-proof nodular-iron Dynatrac diff cover, CNC laser-cut and welded HD suspension brackets (including a multiple-position track-bar bracket), ARB Air Locker, and choice of 4.88, 5.13, or 5.38 gears. Adapters for stock JK parking-brake cable attachment must be purchased separately.