Fabtech 3in Sport System

2021 Jeep Wrangler Unlimited 4XE 4-Door

K4201DL

Overview:

The Fabtech 3in Sport System is a premium suspension upgrade designed specifically for the 2021 Jeep Wrangler Unlimited 4XE 4-door models. Engineered to enhance both on-road comfort and off-road capability, this system features American-made dual rate coil springs that provide a smooth highway ride while allowing for extended suspension travel during off-road use. Ideal for Jeep enthusiasts seeking improved handling, ride quality, and suspension articulation, the Sport System balances daily drivability with rugged performance.

With corner-specific springs and carefully engineered components, this kit maintains vehicle stability and ride height, ensuring your Jeep Wrangler performs confidently across diverse terrains without sacrificing comfort or control.

Key Features:

The Fabtech 3in Sport System incorporates advanced suspension technology and robust hardware to deliver a superior driving experience:

• Dual Rate American-made coil springs designed for long travel suspension and smooth highway performance
• Corner-specific springs to maintain side-to-side vehicle level and optimize suspension travel
• Two-stage spring design: soft initial stage for comfort, second stage for payload support and high-speed impact absorption
• Four bump stop extensions that utilize factory bump stops for compliant cushioning and prevent over-cycling of suspension and driveline
• Extended front and rear sway bar links with urethane bushings to reposition sway bars within factory operating planes and prevent binding at full extension
• Heavy-duty rear track bar bracket to re-center the axle while retaining the factory roll center with increased ride height
• Compatible with a variety of tire and wheel sizes, including 35" to 37" tires with minor trimming or cutting depending on fender type
• Designed for 4-door Jeep Wrangler Unlimited models with standard or high clearance fenders

Construction & Design:

Fabtech’s 3in Sport System is crafted with durability and performance in mind. The coil springs are manufactured in the USA using high-quality steel and feature a dual rate design that adapts to varying load and terrain conditions. This engineering approach allows the suspension to absorb small bumps smoothly while providing firm support during heavy impacts or when carrying payloads.

The bump stop extensions are designed to work seamlessly with the factory components, preserving suspension travel limits and protecting driveline components from damage. Urethane bushings on the sway bar links enhance durability and reduce unwanted flex, ensuring precise handling. The heavy-duty rear track bar bracket is engineered to maintain proper axle alignment and vehicle roll center, critical for maintaining predictable handling characteristics after lift installation.

Installation & Fitment:

The Fabtech 3in Sport System is a direct-fit suspension upgrade for 2021 Jeep Wrangler Unlimited 4XE 4-door models, including trims such as Rubicon, Sahara, Sport, Willys, and special editions like the 80th Anniversary and High Altitude. Installation requires minor trimming or cutting of fenders depending on tire and wheel size, especially when fitting larger 37" tires with high clearance fenders.

All components are designed to work with the factory suspension geometry, minimizing the need for additional modifications. Professional installation is recommended to ensure proper alignment and optimal performance.

What's Included:

• Dual rate coil springs (corner-specific for JL)
• Four bump stop extensions
• Extended front and rear sway bar links with urethane bushings
• Heavy-duty rear track bar bracket
• All necessary hardware for installation

Ideal For:

This suspension system is perfect for Jeep Wrangler owners who want a balanced upgrade that enhances both off-road capability and on-road comfort. It suits enthusiasts who frequently drive on highways but also demand extended suspension travel and durability for trail riding. The kit supports a wide range of tire sizes and wheel offsets, making it ideal for those customizing their Jeep with larger tires and wheels while maintaining reliable handling and ride quality.

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.