The paramount suspension upgrade for your XJ is a long arm system. Iron Rock Off Road's ROCK-LINK 3 link front long arm and rear 4 link coil spring conversion kit offers unrivaled performance, giving your Jeep both the capability and ride quality improvements that you have been looking for. This ROCK-LINK long arm upgrade is built for strength, clearance, adjustability, flexibility, and ease of install.
Are you tired of leaf springs? Our exclusive rear bolt on long arm design is now available with 4-Link Rear long arms for your XJ as an upgrade to your existing lift kit. In addition to the new long arms, you'll get 2 new subframes a rear axle truss and axle brackets which will be used to eliminate the leaf springs. This is a fully adjustable double triangulated kit that will correct your rear suspension geometry. Just like our popular front Critical Path long arms, you'll have the ability to install the subframes with NO welding, cutting or grinding at all! You'll only drill holes for the BOLT ON subframe that is brake formed from 1/4" and 3/8" steel plate. The only welding required for this is to the rear axle!
This upgrade will allow as much articulation as your rear shocks will allow! We use a high quality greasable, pivoting flex joint on the axle side for great flexibility and factory style rubber bushings on the chassis end to absorb road "noise." Oh yes, you will need coil spring retainers for the rear now too! They are also included in the kit.
STRENGTH: Our subframe is constructed with 1/4" steel and our lower arms are even thicker at 2"x5/16" wall D.O.M. tubing.
- CLEARANCE: We tuck our subframe up as tight as possible to gain you the critical extra clearance to keep your Jeep low and your belly high! The lower arm connections at the chassis are as high as possible with still being able to install a bolt through them. The control arms have an inboard bend to clear your tires, so you can steer lock to lock without rubbing on them
- ADJUSTABILITY: All the arms have tons of adjustment built in for your stock situation to your stretched crawler.
- FLEXIBILITY:Yes, of course we are talking about articulation, and the ROCK-LINK delivers plenty! But we are also talking about flexibility to install other axle combinations with ease. Use this kit with your stock Dana 30 for now, and then bolt in a Dana 44 or Dana 60 down the road!
- EASE OF INSTALL: No welding, no cutting, no complicated setup or templates. All you need is a drill, a floor jack, some jack stands and some hand tools. This is a BOLT-IN kit, although if your preferred method of installation is welding, you can do that! (NOTE: most installers opt to cut off the factory lower control arm mounts on the chassis, but it's not required)
KEY PRODUCT FEATURES:
2", 5/16" thick wall D.O.M. lower control arm material 1/4" thick, 3 piece, subframe assembly Huge tire clearance with inboard control arm bends Best ground clearance available with super high clearance long arm subframe mounts Makes axle swaps much simpler! Maintains caster through the suspension cycle Easy to install without welding, only simple drilling is required!!! Seriously, you can install this in your driveway in a few hours!Kit Includes:
- Complete long arm package
- Front /Rear Subframe Mounting System
- Rear axle truss and brackets
- Coil spring retainers
- All necessary hardware
Detailed Front Installation Instructions Detailed Rear Installation Instructions
PLEASE NOTE:
- 2000 and 2001 models with automatic transmissions will require old style transmission mount such as 2625
- XJ's with the 4 cylinder engine and 5 speed transmission require adapter 14418
- Custom exhaust and a smaller catalytic converter required
- The JK Dana 44 rear axle truss will NOT work on the XJ Dana 44 axle. XJ Dana 44 owners would be best to start with our Dana 35 axle truss and do some cutting and grinding to make it fit.
- Modifications to emergency brake system will be required, parts not included
Estimated Installation
Time: 14-18hrs
Difficulty Level: 4
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.
IRO LIFT KIT BUYER'S GUIDE:
Kit Types |
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Short arm kits:
What is a short arm kit? A short arm kit is a suspension system that typically utilizes the factory mounting points on the axles and the chassis for your control arms. These types of kits can use OEM control arms, heavy duty fixed length arms, heavy duty adjustable arms, OR any combination of these options. Short arm kits are the easiest system to install and upgrade, and are very versatile. These systems are best used in 0-4.5” lift range, depending on the vehicle. From daily driving to overlanding, to light rock crawling, these kits transform your Jeep into a swiss army knife. With a low purchase price, and fantastic performance gains over stock, these are a great bang for the buck!
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FOUNDATION SERIES
- Most affordable option
- Huge improvement over stock suspension
- Clearance to fit bigger tires and drive over larger obstacles
- Has all required parts with nothing you don’t need
- Great “foundation” to build on!! Upgrade when it fits your build timeline/budget.
- Kit utilizes short arms (not a long arm kit)
- Simplest installation, using basic hand tools. Minor drilling may be required.
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BENCHMARK SERIES
- Contains all “Foundation” kit features PLUS:
- Includes most common and value packed upgrades over the Foundation Series to remain budget friendly.
- Easy to upgrade without purchasing duplicate parts.
- Kit utilizes short arms (not a long arm kit)
- Still a simple install, basic hand tools required. Minor drilling may be required.
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PREMIUM SERIES
- Contains all “Benchmark” kit features PLUS:
- Includes premium level features such as adjustable control arms, adjustable track bars, stainless steel braided brake hoses where applicable.
- Highest performing short arm system
- Kit utilizes short arms (not a long arm kit)
- The best for mild lift height builds for all around versatility, adjustability, and durability.
- Basic hand tools for installation. These kits usually contain several components with adjustments so we view this as a medium difficulty installation. Some minor drilling may be required.
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Long arm kits:
What is a long arm kit? Long arm suspension systems use a chassis mounting system that allows a much longer control arm set to be installed. Why? This allows for a flatter operating angle for and more straight up and down axle movement through the suspension cycle. The benefits include an improved ride comfort than otherwise equally equipped short arm suspension, significantly reduced binding allows more articulation keeping your tires on the ground longer, meaning more traction without the use of traction aides (like limited slip or lockers). Long arm systems often have easier provisions for swapping in different axles. The ROCK-LINK kits are Iron Rock’s answer for a premium long arm system. These systems are the best choice for modern installers since the benefits are “next level” when compared to any short arm systems. These systems are best used in 3-8+” lift range, depending on the vehicle. The installation can vary from simple to difficult depending on the system or vehicle application.
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ROCK-LINK
- Contains long arms in the front and short arms in the rear. This combines the premium performance benefits of a long arm system and the great value of short arms or leaf springs ;-)
- Stronger than stock
- Great for both high ground clearance builds as well as low center of gravity builds
- Typically does not require exhaust modification.
- Best for lifts above 3.5”, from daily driver to aggressive off-road driving style, including rock crawling!
- Easy to upgrade by adding rear long arms at a later time. This allows you to build up to the ROCK-LINK PRO in stages as your budget allows.
- Installation is usually longer than short arm kits due to the quantity of parts replaced/upgraded. Difficulty level is medium. Basic hand tools required. May require minor drilling/cutting.
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ROCK-LINK PRO
- Includes all ROCK-LINK features but upgrades from the short arms (or leaf springs) in the rear to a long travel, long arm system.
- Great for any and ALL builds 3.5” and up. These kits EXCEL in ride comfort with also providing maximum off-road capability.
- Typically requires exhaust modification. Iron Rock does have exhaust kits available for many models.
- Installation difficulty is “hard.” Typically requires welding/cutting/drilling.
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Customer Ratings & Reviews
Ratings Snapshot
5
(2)
4
(0)
3
(0)
2
(0)
1
(0)
Value
5.0
Quality
5.0
Service
4.5
Would recommend this product.
5
(2)
4
(0)
3
(0)
2
(0)
1
(0)
Value
5.0
Quality
5.0
Service
4.5
Would recommend this product.
Solid kit.
Drew
Location: Tennessee
Date: January 16, 2020
I have been running this kit for quite a while in my XJ, running 05+ Super Duty axles and 40" tires. It handles the abuse of East Coast wheeling, and has never given me any issues. The high clearance control arms are a must in the rocks. Great on road manners, and plenty of flex and control offroad. Highly recommended.
Recommended
Value
5
Quality
5
Service
5
Great product
Matt
Location: San Angelo TX
Date: December 23, 2019
Love this kit, only 4 on service because some pieces were missing from my order, but they sent the parts right out, we did custom order on this kit also.
Recommended
Value
5
Quality
5
Service
4
