Fabtech JL Crawler Long Arm Suspension System

2018–2021 Jeep Wrangler Unlimited Rubicon, Sahara, Sport, Sport S 4-Door

K4145DL

Overview:

The Fabtech 5-inch Crawler Long Arm Suspension System with Dirt Logic 2.25 Resi Shocks is engineered specifically for 2018 to 2021 Jeep Wrangler Unlimited 4-door models. Designed for serious off-road enthusiasts, this system delivers superior handling, increased ground clearance, and enhanced durability without the need for ongoing fabrication or maintenance. Fabtech’s precision-engineered geometry ensures optimal suspension travel and ride quality, making it an ideal upgrade for Jeep owners seeking reliable, high-performance suspension right out of the box.

Built to meet the demands of experienced drivers, the JL Crawler system combines rugged construction with advanced design features to improve articulation, approach angles, and overall off-road capability while maintaining smooth, quiet street performance.

Key Features:

This comprehensive suspension kit includes everything needed to transform your Jeep Wrangler’s off-road performance:

• Front and rear lower 5 Ton link arms constructed from 2" OD, .313 thick wall tubing for unmatched strength and durability
• Fabtech’s legendary 5 Ton joints with lifetime guarantee, providing smooth, quiet operation and superior off-road reliability
• Full-width front crossmember that mounts link arms at optimal geometry while reinforcing the JL’s lightweight frame
• Rear lower link arm mounts relocated to the frame sides for increased ground clearance and improved approach angles
• Front and rear corner-specific dual rate coil springs for balanced ride and articulation
• Front and rear Dirt Logic 2.25 Resi shocks designed for enhanced off-road damping and control
• Heavy-duty flipped draglink and front shock mount brackets for improved steering geometry and durability
• Front and rear sway bar links, bump stop extensions, brake line drops, and track bar brackets included for a complete suspension upgrade

Construction & Design:

Fabtech’s JL Crawler system is engineered with precision and built to last. The massive lower link arms are fabricated from thick-walled steel tubing to resist bending under extreme off-road conditions. The front crossmember spans the full width of the frame rails, reinforcing the lighter JL frame and ensuring the link arms maintain their ideal geometry throughout suspension travel.

Rear link arms mount to newly designed frame brackets positioned to maximize ground clearance and approach angles, critical for technical trail driving. The system’s 5 Ton joints are renowned for their durability and smooth operation, backed by a lifetime warranty, making them a standout feature for both trail and street use.

Installation & Fitment:

Installation of the Fabtech 5-inch Crawler system requires welding and some exhaust modifications on all 2018 Jeep JL Wranglers. Driveshaft replacements are necessary for 4-door models to accommodate the lift. Minor trimming or cutting of fenders may be required depending on tire and wheel size combinations. This kit is designed exclusively for 4-door Jeep Wrangler models from 2018 through 2021, including Rubicon, Sahara, Sport, and Sport S trims.

Recommended tire sizes vary based on fender type, with standard fenders supporting up to 37-inch tires and high clearance fenders accommodating up to 40-inch tires with appropriate wheel offsets and minor trimming or cutting.

What's Included:

• Front and rear lower 5 Ton link arms
• Front full-width crossmember with skid plate
• Rear lower link arm frame mounts
• Front and rear corner-specific dual rate coil springs
• Front and rear bump stop extensions
• Front and rear sway bar links
• Front and rear brake line drops
• Front and rear track bar brackets
• Heavy-duty flipped draglink
• Front shock mount brackets
• Front and rear Dirt Logic 2.25 Resi shocks

Ideal For:

This suspension system is ideal for Jeep Wrangler owners who demand a durable, high-performance long arm setup that delivers superior off-road capability without sacrificing street drivability. It suits enthusiasts who frequently tackle challenging terrain and require a suspension that maintains proper geometry, ground clearance, and articulation while minimizing maintenance and fabrication hassles.

Fabtech is an off-road suspension leader producing lift kits, shocks, and related components to increase ride height, clear larger tires, and improve capability. Their systems are engineered for specific trucks and SUVs, blending on-road drivability with the added travel and strength enthusiasts want for trails, desert runs, and overland builds.