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CODE: 15918 JL 4" Rock-Link PRO Long Arm Lift Kit

JL 4" Rock-Link PRO Long Arm Lift Kit
Purchase JL 4" Rock-Link PRO Long Arm Lift Kit
  • CODE: 15918 JL 4" Rock-Link PRO Long Arm Lift Kit

  • Kit Loading

  • Kit Products

    Choose Your Front Springs *

      Choose Your Shocks *

        Choose Your Front Track Bar *

          Choose Your Rear Track Bar *

            Choose Your 2 or 4 Door Model *


            Born from the long lineage of the IRO long arm tradition. Look no further for the best performing long arm lift kit for the JL Wrangler, the Rock-Link PRO 4" lift kit.

              Experience your Wrangler, refined. It's a Jeep, but that doesn't mean it has to ride like a lumber wagon. The Rock-Link PRO delivers an instant seat of the pants improvement in ride quality. But that's not all! Out on the trail, the improvement in ride quality translates to a more enjoyable off road experience. The longer arms in this system link your axle to the frame at a much lower operating angle than short arms at the same lift height. By decreasing that angle and increasing the length of the arms, the impact of the terrain is more easily absorbed by the suspension. These improvements over short arms greatly reduce the transmission of shock loads though the frame causing discomfort in the driver's seat, and reduces accelerated wear and stress on other suspension components. Longer arms allow for huge articulation over larger obstacles while keeping the axle centered in the fender openings. This articulation keeps your tires on terra firma, which translates into more traction. When comparing an otherwise equally equipped vehicle that has short arms, the Rock-Link equipped one will take you farther.

                This kit is not just for rock crawlers! Maybe you aren't going to tackle Chocolate Thunder or Pritchett Canyon, but you are going to crush the REI parking lot, or turn every head while pulling up to your kid's campout. This Rock-Link PRO lift kit delivers a true ride quality improvement for your daily driver that you can be proud of. Are you tired of your JL tracking wildly down the highway? The built in adjustments will give you everything you need to dial it in to perfection. Even stock, JL's are setup with minimal caster from the factory, so get your alignment right once and for all with the Rock-Link.

                At IRO, we have been perfecting long arm systems since 2004, making them even better with each new product release. We have learned that subtle changes to the geometry will make significant improvements to your driving experience. We have applied all these important refinements to the JL platform. We learned that the biggest improvement in ride quality and off road performance comes with a FRONT and REAR long arm system. When looking at what this Rock-Link PRO offers versus the cost, we challenge you to find a suspension system that will take your Wrangler Beyond Boundaries at a price that is even close.

                Note: Rubicon models use 1in taller springs from the factory.  This kit will net 3in of lift on Rubicon models.

                  Kit Features
                • Lower arms are 2"x5/16" wall D.O.M. - Thickest on the market
                • All 1/4" steel bracketry - CNC laser cut and formed
                • Huge 1.25" thread adjusting male ends with 3" of useable adjustment, that's far more than any competitor.
                • No jam nuts
                • Combination of flex joints and rubber bushings in control arms for flex and comfort
                • Fully adjustable caster/pinion angles
                • Bolt in design
                • Made in the USA!
                • Lifetime Warranty

                  Kit Includes
                  • Front and rear 4-Link long arms
                    • Front and rear 4" multi-rate lift coil springs
                    • Shock absorbers
                    • Front adjustable bumpstop extensions
                    • Heavy Duty front and rear adjustable track bars
                    • Front sway bar disconnect links
                      • Extended length HD rear sway bar links
                        • All required hardware 

                                  Product Fitment Notes
                                • Fits 3.6, 2.0, and EcoDiesel
                                • Requires removal of factory control arm mounts in the front and rear
                                • Requires drilling
                                • 2 Door and Diesel models require included bracket to retain factory transfer case skid plate
                                • Does not fit 2 door models unless the gas tank is relocated

                                Recommended tire size: 35"x12.50" – or metric equivalent 
                                Recommended wheel backspacing: 4.5"

                                TRIMMING MAY BE REQUIRED
                                Larger tire sizes possible with bumper/fender trimming and/or extended bump stops.

                                Estimated Installation Time: 6-8hrs

                                Difficulty Level: 3

                                Difficulty Legend

                                1 - Kit includes basic components.

                                2 - Kit includes little to no adjustable components.

                                3 - Kit includes many adjustable components; may require drilling/cutting.

                                4 - Kit includes many adjustable components; requires welding; may require drilling/cutting.

                                NOTE - Labor Time and Difficulty Level assumes vehicle and/or hardware is in good condition.

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