Description
Upgrade your Jeep JK Wrangler Unlimited with the RockJock Pro Edition Johnny Joint Suspension System, a premium suspension lift kit engineered for maximum strength, articulation, and extreme off-road performance. Designed to deliver approximately 4 inches of lift, this Jeep JK suspension system provides clearance for up to 37-inch tires, with larger tire fitment requiring aftermarket fenders and minor trimming.
Built for serious off-road enthusiasts, the Pro Edition Johnny Joint Suspension System represents the highest level of RockJock engineering, combining superior strength, precision fitment, refined finish, and proven suspension performance. Every component is designed for maximum durability and long-term reliability in the most demanding driving conditions.
This Jeep JK lift kit is engineered to deliver a rare balance of on-road comfort and off-road capability. It provides a smooth, controlled ride on pavement while maximizing suspension articulation and stability on technical terrain, making it ideal for rock crawling, overlanding, and aggressive trail use.
As a complete direct bolt-on suspension system, installation is straightforward with no major fabrication required. It is purpose-built for Jeep owners who want more than a basic lift—delivering the strength and geometry needed to confidently run larger tires and tackle the toughest trails in the country.
The RockJock Pro Edition Johnny Joint Suspension System is the ultimate Jeep JK Unlimited suspension upgrade for drivers who demand top-tier performance, durability, and off-road capability in a fully integrated lift kit solution.
Kit Fits:
- JK Wrangler Unlimited (4-door) – All Models
Kit Includes:
- 4 in. Lift Dual-Rate Front And Rear Springs
- 8 Johnny Joint Adjustable Control Arms
- Johnny Joint Adjustable Front Trac Bar (forged, organically shaped)
- Johnny Joint Adjustable Rear Trac Bar
- Front and Rear Bump Stop Kits
- Front and Rear Adjustable Sway Bar Links w/ Sealed Ends
- Front and Rear Brake Line Relocation Brackets
- Rear Trac Bar Geometry Correction Bracket
- Rear Shock Relocator Kit
- All Required Hardware
Kit 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 your JK’s 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 Bars – Heavy duty adjustable length Trac Bars included are our forged chromoly, organically shaped front bar and our chromoly rear bar. Our Trac Bars combine a precise fit with increased strength and adjustable length to perfectly center front and rear axles under the vehicle. High-articulation Johnny Joint ends provide maximum durability and suspension flex.
Lift Details – The RockJock Suspension System provides 4 in. of suspension lift.
- Actual lift height may vary due to factory build specs. and added equipment and accessories.
Exhaust Clearance:
- 2012 and newer models will most likely require exhaust modifications to allow for full suspension down travel.
Tire Fitment:
- 37 in. tires – no inner fender modification necessary
- 38 in. or larger tires – aftermarket high-clearance fenders suggested/required
See This Kit:
