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Product Description
RockJock's Pro Edition Johnny Joint Suspension System for 4XE Hybrid JL Wranglers and Unlimiteds provides 3.5 inches of lift and allows for efficient clearance of up to 37 in. tall tires (larger tires will require aftermarket fenders and minor trimming)! Comprised of only the highest end components in the areas of strength, fit, finish, function, and the engineering to back them, this kit is more than sufficient for those who want to lift their vehicle, install big tires and hit some intermediate trails on the weekend! For those who intend to do more serious 4 wheeling and rock crawling, you'll want to look at all of the upgrade parts that RockJock has to offer that can be added to this kit to get your vehicle to it's full potential at any level of off-roading! We always recommend adjustable shocks, as they allow the ride to be tuned to match the terrain and driver’s preference.
Product Key Features
- RockJock Spec. Dual-Rate Springs: Feature a soft initial rate that absorbs small bumps and trail chop, to deliver a smooth, comfortable ride, while a firmer secondary rate helps soak up larger impacts and reduce bottoming. A key differentiator of RockJock spec. dual-rate springs is the positioning of the crossover point between the initial and secondary spring rates so that a portion of the softer initial rate is available and active at ride height before crossing over to the firmer secondary rate deeper into the travel.
- Bump Stop Spacers: Proper bump stop extensions are a must and our heavy duty kits stand up to hard use while keeping the tires off of the shiny new JL fenders!
- Johnny Joint Control Arms: Heavy duty adjustable upper control arms feature RockJock Johnny Joints, the original and most durable high-articulation urethane suspension joint on the market. Johnny Joints feature a smooth steel ball that pivots inside a proprietary urethane shell to provide over 30 degrees (per joint) of quiet, shock dampening articulation - without the excessive deflection found in soft rubber-based flex joints. Johnny Joints are so trusted, that they are used by multiple commercial suspension companies, for both street and off-road suspension systems.
- Johnny Joint Trac Bar: Forged chromoly, organically shaped front trac bar combines a precise fit with incredible strength and rigidity that is only available via forging. The adjustability feature allows you to perfectly center front and rear axles under the vehicle. High-articulation Johnny Joint ends provide maximum durability and suspension flex.
Product Specifications
Brand: | RockJock 4x4 |
Product Category: | Suspension Components |
Product Type: | Suspension Kits |
Lift Amount: | 3.5" (Lift height may vary due to factory specs and added equipment) |
Tire Fitment (37" Tires): | No inner fender modification necessary |
Tire Fitment (38+" Tires): | Aftermarket high-clearance fenders suggested/required |
Wheel Backspace: | 4.5" wheel backspace is recommended for all tire sizes |
Product Included Items
- 3.5 in. Lift Dual-Rate Front And Rear Springs
- Front Coil Spring Shim
- Johnny Joint Adjustable Front Upper Control Arms
- Johnny Joint Adjustable Rear Upper Control Arms
- Johnny Joint Adjustable Front Trac Bar (forged, organically shaped)
- Rear Trac Bar Geometry Correction Bracket
- Front and Rear Bump Stop Kits
- Front and Rear Adjustable Sway Bar Links w/ Sealed Ends
- Front Brake Line Relocation Brackets
- All Required Hardware
Product Documents
Installation Guide
Product Warranty
Product Applications
Product Brand Information
RockJock by John Currie’s roots run deep as jeeping has been a love of the Currie family for decades. In his off-roading adventures, John pushed the limits of his vehicles coming to the realization of the shortcomings of the equipment. Thus, it became John’s goal to design and build the best-performing, strongest, most durable products on the market. A Jeep suspension upgrade product line was first developed in the 1980s based around Jeep CJ and YJ vehicles. Fast forward to 1998 and John’s off-roading passion evolved into professional rock crawling competitions. In 2001, John Currie took home the 1st place trophy in the Extreme Rock Crawling Championship Series, in a RockJock equipped Jeep TJ Wrangler. This was the first of many victories and championships for John, and the victories have continued with various other drivers of RockJock equipped vehicles in numerous rock crawling, Ultra 4 and desert racing categories!