Fabtech Crawler Long Arm Suspension System

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

K4131DL

Overview:

The Fabtech 3-inch Crawler Long Arm Suspension System is engineered specifically for 2018 to 2021 Jeep Wrangler Unlimited 4-door models, including Rubicon, Sahara, Sport, and Sport S trims. Designed for serious off-road enthusiasts, this system delivers superior handling, enhanced ground clearance, and durable construction right out of the box. Unlike other kits that require ongoing fabrication or maintenance, the Fabtech Crawler is a complete, precision-engineered solution that ensures reliable performance on rugged terrain and smooth operation on the street.

With a focus on optimized geometry and strength, the Crawler system improves suspension articulation and approach angles, making it ideal for drivers who demand both capability and confidence from their Jeep Wrangler.

Key Features:

This long arm suspension kit incorporates advanced engineering and premium components to maximize off-road performance and durability:

• 3-inch suspension lift designed for 4-door Jeep Wrangler JL models with standard or high clearance fenders
• Massive 2" OD, .313 wall thickness lower link arms guaranteed not to bend under extreme conditions
• Fabtech’s legendary 5 Ton joints with lifetime warranty, providing smooth, quiet operation and exceptional off-road durability
• Full-width front crossmember for precise link arm geometry and added frame strength
• Rear link arms mounted to new frame mounts for increased ground clearance and improved approach angles
• Front and rear corner-specific dual rate coil springs for balanced ride quality and articulation
• Heavy-duty flipped draglink and front shock mount brackets for enhanced steering response and suspension travel
• Front and rear Dirt Logic 2.25 shocks tuned for off-road performance and street comfort
• 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 Crawler system is built with high-strength materials and precision engineering to withstand the demands of serious off-road use. The lower link arms are constructed from thick-walled 2-inch tubing to resist bending and maintain alignment under heavy loads. The full-width front crossmember not only secures the link arms at the optimal geometry but also reinforces the lighter JL frame, enhancing durability during aggressive trail driving.

All joints utilize Fabtech’s proprietary 5 Ton joints, known for their longevity and smooth operation, eliminating the common issues of wear and noise found in lesser suspension components. Rear link mounts are repositioned to improve ground clearance and approach angles, critical for navigating challenging obstacles.

Installation & Fitment:

Installation of the Fabtech Crawler 3-inch long arm system requires welding and moderate mechanical expertise. It is designed exclusively for 4-door Jeep Wrangler JL models from 2018 through 2021. Exhaust modifications are necessary on all 2018 Jeep JL Wranglers, with an optional AFE loop delete pipe (P/N 48-48024) available to facilitate this.

Additionally, upgraded driveshafts are required for proper fitment on 4-door models (front FTS94057 and rear FTS94065). Minor trimming or cutting of fenders may be needed depending on tire and wheel size combinations, especially when using high clearance fenders with larger tires.

What's Included:

• Front and rear lower 5 Ton link arms
• Front link arm 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 shocks

Ideal For:

This suspension system is ideal for Jeep Wrangler owners who demand a reliable, high-performance long arm setup that enhances off-road capability without sacrificing street drivability. It suits enthusiasts who frequently tackle challenging trails, rock crawling, and overlanding, while maintaining a smooth and quiet ride on paved roads. The Fabtech Crawler is perfect for those seeking a durable, maintenance-free suspension upgrade that fits seamlessly with factory components and aftermarket accessories.

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.