| Vehicle Fitment | 2018 and newer Jeep Wrangler JL (Not compatible with 4-cylinder e-torque equipped vehicles) |
| Extreme 60 | ___________________________________________________________________________________ |
| Housing | Extreme 60 Nodular Iron High-Clearance Center Section with Rotated Cover, Ring Gear Load Bolt and Integrated Skid Plate |
| Bearing Caps | Increased cross section nodular iron caps secured with ARP® fasteners |
| Pinion Oiling | High volume flow-thru recirculating oil system |
| Gear Set | Dana 60™ reverse rotation thick gear sets (compatible with super 60 reverse cut gears) |
| Differential Carrier | Only high speed differential carriers (designed for low numerical gears) are used, enabling the use of stronger thick ring gears for all gear ratios. Carrier outside diameter is turned down to 8.30 inches for load bolt clearance |
| Ring Gear Load Bolt | Eliminates ring gear deflection under heavy load (3/4"-16 right hand thread with Jam nut) |
| Pinion Yoke | 1350 u-joint |
| Skid Plate | AR400 hardened steel skid plate |
| Differential Cover | Currie nodular-iron cover, Red |
| Axle Tubes | 3 1/2 inch diameter, .375 wall DOM tube |
| Suspension Brackets | Heavy gauge 3/16 steel mounting brackets |
| Width | 70-inches wide (between wheel mounting surfaces) |
| Wheel Bolt Pattern | 8-lug (8 x 6.5 in.) with 9/16 studs |
| Finish | Black satin powder coat |
| Front Extreme 60 | ___________________________________________________________________________________ |
| Axles | Currie Performance 35-spline (1.5 in. diameter) 4340 Chromoly inner and outer axle shafts with 1480 u-joints, Currie Performance double splined full-floating (35-spline 1.5-inch diameter) 4340 heat-treated chromoly |
| End Forgings | Currie 1-ton heavy-duty forged steel inner C’s |
| Steering Knuckles | Currie 1-ton nodular iron steering knuckles machined and keyed for high-steer arms |
| Unit Bearings | 1-ton unit bearings with tone rings installed for ABS and ESP retention |
| Hubs | Warn Premium locking 35-spline hubs |
| Brake Rotors | 13.25-inch vented rotors with zinc plated caliper brackets, Upgraded 13.750-inch vented rotors |
| Brake Calipers | F-350 Dual-piston calipers, Jeep Gladiator rear calipers |
| Tie Rod | 1-ton 1.357 in. OD x .375 wall heat treated chromoly tube with forged tie rod ends |
| Geometry | Optimized for vehicles with 3 to 4-inches of lift (5 degrees of pinion angle and 5 degrees of caster angle), Optimized for 4-inchs of lift with 5 degrees of pinion |
| Track Bar Mount | Integrated raised track bar and ram-assist mount. Trac bar mount height set for 3 to 4 inch lift, ram-assist mount setup for PSC 8-inch travel ram |
| Rear Extreme 60 | ___________________________________________________________________________________ |
| Floater Spindle | Currie Performance 2.5-inch heat-treated 4140 Chromoly spindles, supports 35 or 40-spline axles |
| Floater Hub | Currie Performance billet full-floating hubs with 35-spline drive flanges, tone rings installed for ABS and ESP retention |
| Parking Brake | Modified JT OEM backing plate and parking brake assembly |