A 4-link suspension conversion is one of the most significant upgrades a Jeep builder can make. It replaces the factory leaf spring or coil spring geometry with four control arms that give you precise control over pinion angle, caster, and suspension travel. This guide identifies the correct Motobilt 4-link suspension system for your Jeep model and explains what each system includes.
Quick Answer: Which Motobilt Suspension System Fits My Jeep?
Motobilt 4-Link Suspension System Fitment By Jeep Model
Jeep YJ 4-Link Suspension
Motobilt offers two 4-link suspension options for the Jeep YJ: a standard skid system and the double triangulated 4-link mounting system, which is also compatible with the TJ and LJ.
• MB1503 – 4-Link Suspension Mount Skid System for Jeep YJ
• MB7009 – Double Triangulated 4-Link Suspension Mounting System for Jeep YJ, TJ, and LJ
Jeep TJ and LJ 4-Link Suspension
Both the standard skid system and the double triangulated system are available for TJ and LJ builders.
• MB1517 – 4-Link Suspension Mount Skid System for Jeep TJ and LJ
• MB7009 – Double Triangulated 4-Link Suspension Mounting System for Jeep YJ, TJ, and LJ
Jeep JKU 4-Door 4-Link Suspension (2007-2011)
The Motobilt MB7000 is a complete 4-link suspension bracket and skid kit for the 2007-2011 Jeep JKU.
• MB7000 – 4-Link Suspension Bracket and Skid Kit for 2007-2011 Jeep JKU
Jeep JKU 4-Door 4-Link Suspension (2012-2018)
The Motobilt MB7001 is a complete 4-link suspension bracket and skid kit for the 2012-2018 Jeep JKU.
• MB7001 – 4-Link Suspension Bracket and Skid Kit for 2012-2018 Jeep JKU
Jeep JLU 4-Door 4-Link Suspension
The Motobilt MB7006 is a 4-link suspension bracket and skid kit for the Jeep JLU 4-Door. Builders with the JLU 392 trim will need to perform an engine mount bracket modification for fitment.
• MB7006 – 4-Link Suspension Bracket and Skid Kit for Jeep JLU 4-Door (392 trim requires engine mount bracket modification)
• MB1156 – E-Torque Battery Skid for Jeep JL and JLU (compatible with 4-link builds)
• MB7008 – Rear 4-Link Suspension Bracket Kit for Jeep JLU
Jeep JT Gladiator 4-Link Suspension (2020-2021.5)
The Motobilt MB7016 double triangulated 4-link suspension is designed for the Jeep JT Gladiator from the 2020 through 2021.5 model year.
• MB7016 – Double Triangulated 4-Link Suspension for Jeep JT Gladiator 2020-2021.5
Jeep JT Gladiator 4-Link Suspension (2021.5 and Up)
The Motobilt MB7017 double triangulated 4-link suspension is designed for the 2021.5 and newer Jeep JT Gladiator.
• MB7017 – Double Triangulated 4-Link Suspension for Jeep JT Gladiator 2021.5 and Up
What Is a 4-Link Suspension and Why Do Jeep Builders Use It?
A 4-link suspension system replaces the factory Jeep suspension with four control arms — two upper and two lower per axle — that define the axle's movement through the suspension cycle. This geometry gives the builder control over three critical variables: pinion angle, caster angle, and anti-squat/anti-dive characteristics.
Jeep builders choose 4-link conversions for several reasons. First, a properly designed 4-link allows more suspension travel than a factory setup, which improves articulation on the trail. Second, 4-link geometry eliminates the axle wrap common in leaf spring setups under hard acceleration. Third, a 4-link system allows the builder to run longer control arms that improve ride quality and handling at both low and high speeds.
Motobilt 4-link systems are engineered to work with Motobilt skid plates, crossmembers, and fuel cells, so components integrate without custom fabrication.
About Motobilt 4-Link Suspension Systems
Motobilt designs and manufactures 4-link suspension systems for Jeep Wrangler and Gladiator models at its facility in Ozark, Alabama. All suspension components are laser cut on Mitsubishi equipment and CNC bent for precise fitment. Motobilt suspension systems are made in the United States and designed for DIY builders who want professional-quality components without the custom fabrication cost.
Frequently Asked Questions: Motobilt 4-Link Suspension Systems
What is a double triangulated 4-link suspension?
A double triangulated 4-link suspension uses upper control arms that are angled inward toward a central pivot point, forming a triangle shape when viewed from above. This configuration provides lateral location for the axle without a separate panhard bar or track bar, which simplifies the suspension geometry and allows more axle movement. Motobilt offers double triangulated 4-link systems for the Jeep YJ, TJ, LJ, and JT Gladiator.
What 4-link suspension fits a 2012-2018 Jeep JKU?
The Motobilt MB7001 4-Link Suspension Bracket and Skid Kit fits the 2012-2018 Jeep JKU 4-Door. For the 2007-2011 JKU, use MB7000.
Does the Motobilt JLU 4-link work with the 392 trim?
The Motobilt MB7006 4-Link Suspension Bracket and Skid Kit fits the Jeep JLU 4-Door. For the 392 trim level, an engine mount bracket modification is required for fitment.
What is the difference between MB7016 and MB7017 for the Jeep Gladiator?
The Motobilt MB7016 Double Triangulated 4-Link Suspension fits the Jeep JT Gladiator from 2020 through 2021.5. The MB7017 fits the 2021.5 and newer Gladiator. Motobilt offers separate systems because Jeep made frame and suspension changes at the 2021.5 model year transition.
Does Motobilt make a 4-link suspension for the Jeep YJ?
Yes. Motobilt offers two options for the Jeep YJ: the MB1503 4-Link Suspension Mount Skid System and the MB7009 Double Triangulated 4-Link Suspension Mounting System, which also fits the TJ and LJ.
Can I run a Motobilt 4-link suspension system on a Jeep TJ and LJ?
Yes. The Motobilt MB1517 fits the Jeep TJ and LJ as a 4-link suspension mount skid system. The MB7009 Double Triangulated 4-Link system also fits both the TJ and LJ, as well as the YJ.
Where are Motobilt 4-link suspension systems made?
Motobilt 4-link suspension systems are manufactured in Ozark, Alabama at Motobilt's 85,000 square foot production facility. All components are laser cut from domestic steel and CNC bent for precise fitment.
Do Motobilt suspension systems come with skid plates?
Several Motobilt suspension systems include integrated skid plates. The MB7000 and MB7001 for the JKU include skid kits, and the MB1503 and MB1517 are specifically described as suspension mount skid systems for the YJ, TJ, and LJ.
A 4-link suspension conversion is one of the most rewarding builds you can do on a Jeep — and getting the geometry right starts with components that are built for your specific platform. Motobilt 4-link suspension systems are designed and manufactured in Ozark, Alabama for Jeep models from the YJ through the JT Gladiator, giving DIY builders access to professional-quality suspension geometry without the custom fabrication cost. Every bracket is laser cut for precision fit and engineered to work with Motobilt skid plates, crossmembers, and fuel cells so your entire build comes together as a system. If you're planning a 4-link conversion and want to make sure you're starting with the right components for your Jeep and your build goals, contact the Motobilt team — we'll help you build it right
