Fabtech Crawler Long Arm Coil Suspension System

2007–2018 Jeep Wrangler / Jeep Wrangler JK

K4057DL

Overview:

The Fabtech 3-inch Crawler Long Arm Coil Suspension System with Dirt Logic Shocks is engineered for Jeep Wrangler enthusiasts seeking superior off-road capability and enhanced suspension articulation. Designed specifically for 2007 to 2017 Jeep Wrangler models and 2018 Jeep Wrangler JK variants, this system replaces all eight factory link arms with extended length units to provide smooth operation at extreme angles. Ideal for serious trail riders and off-road adventurers, the Crawler system improves ground clearance and suspension travel without compromising factory load carrying capacity.

Fabtech’s innovative design mounts the link arms high on the frame, increasing clearance and reducing the need to bend links as seen in other long arm kits. This results in a more durable, reliable suspension setup that maintains proper geometry and vehicle stability on rugged terrain.

Key Features:

Fabtech’s Crawler system combines heavy-duty construction with advanced suspension technology to deliver exceptional performance:

• Complete replacement of all eight link arms with extended length, high-mount units for improved articulation and ground clearance
• Lower links constructed from 2" OD, .313 thick wall DOM steel, backed by a warranty against bending
• Internally threaded link arms compatible with Fabtech’s patented 5 Ton Joint, guaranteed never to wear out
• Weld-on 1/4" thick steel track bar brackets front and rear to maintain proper roll center and prevent failure
• Standard rate coil springs designed to retain factory load carrying capacity while enhancing suspension performance
• Includes Dirt Logic 2.25 shocks tuned for balanced ride quality and off-road control
• Adjustable front track bar and rear track bar bracket for precise alignment and handling
• Front and rear sway bar links included to maintain suspension articulation and stability
• Brake line extensions and emergency brake bracket for safe and reliable brake function
• Front bump stop extensions and rear bump stop brackets to protect suspension components during extreme travel

Construction & Design:

Fabtech’s Crawler suspension system is built with durability and performance in mind. The link arms utilize heavy-duty DOM steel tubing with thick walls to resist bending and withstand harsh off-road conditions. The internally threaded design accommodates Fabtech’s exclusive 5 Ton Joint, a robust ball joint engineered to eliminate wear and extend service life far beyond standard components.

Track bar brackets are fabricated from 1/4" thick steel and are welded on to ensure a secure, long-lasting connection that maintains suspension geometry under heavy loads and articulation. The coil springs are a single-rate design, carefully engineered to preserve factory load ratings while improving ride quality and suspension response.

Installation & Fitment:

Installation of the Fabtech Crawler system requires welding and moderate mechanical expertise. It is compatible with 2007 through 2017 Jeep Wrangler models as well as 2018 Jeep Wrangler JK models, including Rubicon, Sahara, Sport, Sport S, X, and Unlimited variants. Some models may require exhaust modifications, driveshaft replacements, or minor trimming and cutting of fenders to accommodate larger tires and suspension travel.

Specifically, exhaust modifications are necessary on all 2012–2018 Jeep Wranglers, and driveshaft replacements are required for 2-door models from 2007–2011 and 2012–2018. Tire fitment varies depending on wheel size and backspacing, with options supporting tires up to 37" with minor trimming or cutting.

What's Included:

• 8 Long Arm Links & Mounts
• Standard Travel Coil Springs (Front & Rear)
• Front & Rear Sway Bar Links
• Adjustable Front Track Bar
• Rear Track Bar Bracket
• Front & Rear Brake Lines
• Emergency Brake Bracket
• Front Bump Stop Extensions
• Rear Bump Stop Brackets
• Dirt Logic 2.25 Shocks

Ideal For:

This suspension system is perfect for Jeep Wrangler owners who demand enhanced off-road performance, increased ground clearance, and superior suspension articulation. Whether tackling technical rock crawling, desert trails, or rugged backcountry terrain, the Fabtech Crawler system provides the durability and control needed to conquer challenging environments while maintaining daily drivability and factory load capacity.

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.