Description
The Extreme 60 high-pinion front crate axle is the strongest 60 series axle that we offer, designed for severe off-road use with up to 40-inch tires and V8 conversion horsepower. If you seek out the most challenging routes and toughest obstacles to conquer then the Extreme 60 is the crate axle of choice
Extreme 60 Features:
- Currie Exclusive High-Pinion, High-Clearance Nodular Iron Center Section With Rotated Cover
- Rock Slider Low-Friction Hardened Steel Skid Plate Sides Over Trail Obstacles With Ease
- Currie Forged 1-Ton Inner Knuckles
- Large Dual-Piston Calipers With 13-Inch Rotors
- 4340 Heat-Treated Chromoly Tie Rod
- 70-Inchs Wide Between Wheel Mounting Surfaces
- Steering Geometry And Brackets Setup For Lifted Vehicles
- 5, 6 or 8-Lug Wheel Bolt Patterns
The Extreme 60 high pinion crate axle for the 2007 and newer Jeep JK Wrangler, is a complete bolt-in axle assembly with all required brackets and mounts in place. The vehicles factory driveshaft will require modification or replacement to accommodate the larger 60 series housing and 1350 series u-joint.
Built to the legendary Currie Standard with exclusive features including:
 | Extreme 60 high-pinion nodular iron center section is the strongest 60 series casting we offer, with heavier main caps, ARP® main bolts, more reinforcement in critical areas over the already strong Currie 60 center | |
 | Ring gear load bolt (top left) eliminates gear deflection, to dramatically increase torque handling capacity. The load bolt typically sits .002 inch from the ring gear and only touches when extremely high torque loads are applied | |
 | Extreme 60 high-pinion radius bottom center section delivers unmatched ground clearance, and improved obstacle slide-over by presenting a smooth curve rather than the sharp edge found on other 60 housings | |
 | Replaceable AR400 hardened steel skid plate resists deformation and gouging to slide over obstacles far better than iron housings or mild steel plates | |
 | Large diameter outer pinion bearing (right) is designed for the demands of reverse rotation/high pinion housings. Stock low pinion bearing (left) | |
 | High volume flow-thru recirculating oil system keeps pinion bearings bathed in cool oil, reducing operating temperatures and eliminating oil starvation issues | |
 | Large 3.5-inch diameter .375 wall axle tubes (left) are three times stronger than the stock JK Dana® 44 (right) without being overweight or sacrificing ground clearance | |
 | Massive forged 1-ton inner knuckles (right) are designed to stand up to the severe punishment of larger tires without flinching | |
 | Upper control arm mounts feature rebuildable Johnny Joints® for maximum suspension articulation with unsurpassed durability | |
 | Rock-proof Currie nodular iron front cover protects expensive internals, adds structural support to the housing's face flange and locates the driver’s side upper control arm mount | |
 | Big 13-inch diameter vented rotors (over 1-inch larger than stock) provide the increased brake torque required for stopping large tires | |
 | Large dual piston calipers complete the big brake package and provide the extra byte required to stop large tires | |
 | Lower control arm mounts are one-piece construction with integrated skid plates to help fend off bracket seeking rocks | |
 | Black satin powder coat finish adds long-lasting protection against rust and corrosion to keep your Currie Extreme 60 looking its best |
Notes
ABS Sensors - Does not include ABS sensors, the factory sensors from the stock axle must be retained and installed on the Extreme 60 housing
Computer Programming: 2012 and newer vehicles require a computer programmer, such as the AEV ProCal Module to reset the gear ratio and tire height in the vehicle's computer for proper function of the vehicles stability control and transmission shift points
Brake Upgrade: The big brake kit included with the Extreme 60 uses 13.25-inch rotors with dual-piston calipers to provide the stopping power required for 37-inch and larger tires
Wheel and Tire Size: 17-inch or larger wheels are required for proper clearance of the brake calipers. Maximum recommended tire size is 40-inches
Wheel Bolt Pattern: Requires wheels with 5 on 5 1/2"
Wheel Studs: Includes 1/2 inch wheel studs
Overall Width: Axle width is 70-inches (+4.6 inches over stock) between wheel mounting surfaces. Additional width improves turning angle with 37-inch and larger tires
Steering Stabilizer: Ram assist brackets are not compatible with and exclude the use of conventional steering stabilizers
Differential Carriers: Carriers provided by Currie for the Extreme 60, are turned down to 8.300" O.D. for load bolt clearance. If a standard O.D. carrier is installed the load bolt will need to be backed out to prevent damage
| Vehicle Fitment | Extreme 60 high-pinion nodular iron radius bottom center section with thicker walls and webbing |
| Bearing Caps | Increased cross section nodular iron caps secured with ARP® fasteners |
| Pinion Bearing | Large diameter front pinion bearing matched to rear bearing |
| 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 |
| Axles | Currie Performance 35-spline (1.5” diameter) 4340 Chromoly inner and outer axle shafts with 1480 u-joints |
| 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 JK tone rings installed for ABS and ESP retention |
| Hubs | Warn Premium locking 35-spline hubs |
| Brake Rotors | 13.25" vented rotors (over 1.3" larger diameter than stock, provides increased brake force) with zinc plated caliper brackets |
| Brake Calipers | Dual piston calipers with increased pad contact area for improved breaking |
| Tie Rod | Currie Currectlync® modular extreme duty 1 5/8” diameter, .250 wall heat treated chromoly tube with 1 ¼” forged tie rod ends |
| Suspension Brackets | Heavy gauge 3/16” steel mounting brackets with multiple mounting locations that enable the suspension geometry to be tuned |
| Control Arm Mounts | Currie Johnny Joints® installed with ½” greasable bolts |
| Geometry | Optimized for 4” lift kits with 5 degrees of pinion angle to reduce driveshaft angle and 5 degrees of caster for improved steering |
| Ram Mount | Ram mounting brackets welded to housing, setup for PSC 8” travel steering ram (not compatible with stock steering stabilizer) |
| Width | 70” wide (between wheel mounting surfaces), provides increased turning angle with 37 inch and larger tires |
| Wheel Bolt Pattern | 5 lug ( 5 on 5 ½") or 6 lug (6 on 5 ½") with 1/2" studs installed or 8 lug (8 on 6 ½") with 9/16 studs installed |
| Finish | Black satin powder coat |
