Our exclusive bolt on long arm design is now available as a 4-Link Rear long arms system for your ZJ. It's perfect as an upgrade to your existing lift kit. In addition to the new long arms, you'll get a new subframe and truss which will be used to eliminate the factory short arms. This is a fully adjustable, triangulated kit that will correct your rear suspension geometry without the use of a spacer. With this system, you have the ability to install with NO 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 and weld the truss/4 link mount on the 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."
PLEASE NOTE: Exhaust modification will be required to run this upgrade. Additionally, your ZJ must have 4.5" or taller suspension lift.
KIT INCLUDES:- Complete rear long arm package (Rear Upper and Lower Adjustable long arms)
- Subframe Mounting System
- Heavy Duty axle truss and 4 link bracket
- Upper coil retainers
- All necessary hardware
If you're performing a rear axle swap at the same time, check our ZJ 4 Link Axle Swap Kit 13313.
INSTRUCTIONS:
Estimated Installation
Time: 10-12hrs
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 |
|---|
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!
|
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.
|
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.
|
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.
|
|
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.
|
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.
|
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.
|
|
Customer Ratings & Reviews
Ratings Snapshot
5
(1)
4
(0)
3
(0)
2
(0)
1
(0)
Value
5.0
Quality
5.0
Service
4.0
Would recommend this product.
5
(1)
4
(0)
3
(0)
2
(0)
1
(0)
Value
5.0
Quality
5.0
Service
4.0
Would recommend this product.
4 link
Pedro
Location: AZ
Date: December 4, 2018
I bought this 4 link suspension for my Jeep a year ago and let me tell you if you wanna be on the next level in suspension you need to get this 4 link system you will be very happy.
Recommended
Value
5
Quality
5
Service
4
