Fabtech Radius Arm Kit

2013–2018 Ram 3500

K3079DL

Overview:

The Fabtech Radius Arm Kit is a premium 7-inch lift system designed specifically for 2013 to 2018 Ram 3500 trucks. This kit enables the installation of the robust Dirt Logic 4.0 Resi Coilovers on the front suspension, delivering exceptional off-road performance and a smooth highway ride. Ideal for Ram 3500 owners seeking to upgrade their suspension for enhanced durability, improved handling, and increased ground clearance, this system combines rugged construction with advanced shock technology.

Built to accommodate larger tires up to 38 inches in diameter with minor trimming, the Fabtech Radius Arm Kit transforms your Ram 3500 into a capable off-road machine without sacrificing daily drivability. It is compatible with a wide range of Ram 3500 trims, including Big Horn, Laramie, Laramie Limited, Laramie Longhorn, Limited, Lone Star, SLT, ST, and Tradesman models within the specified years.

Key Features:

This radius arm coilover conversion system offers a comprehensive upgrade to your Ram 3500’s front suspension, featuring:

• 7-inch suspension lift for increased ground clearance and aggressive stance
• Compatibility with Dirt Logic 4.0 Resi Coilovers featuring stainless steel bodies for corrosion resistance
• Remote billet aluminum reservoirs on coilovers for improved heat dissipation and consistent damping
• Utilization of factory upper coil buckets reinforced with support gussets for enhanced strength
• Welded lower mounts on the axle housing with cross support gussets to maintain factory Trac Bar bracket integrity
• Includes rear Dirt Logic shocks for balanced suspension performance front and rear
• Supports tire sizes up to 38/13.50R22 with minor trimming on wheels up to 22x10 with 5-inch backspacing
• Designed specifically for Ram 3500 models without factory air suspension

Construction & Design:

The Fabtech Radius Arm Kit is engineered with durability and performance in mind. The system retains the factory upper coil bucket, reinforcing it with gussets to withstand the rigors of off-road use. The lower mounts are welded directly to the axle housing, providing a solid foundation and enhanced structural integrity. Cross support gussets maintain the factory Trac Bar bracket’s position, ensuring proper suspension geometry.

The Dirt Logic 4.0 Resi Coilovers feature stainless steel bodies that resist corrosion and wear, extending the life of your suspension components. Their remote reservoirs, crafted from billet aluminum, improve shock cooling and maintain consistent damping performance under demanding conditions. This combination of materials and design delivers a suspension system built to last and perform in both highway and off-road environments.

Installation & Fitment:

Installation of the Fabtech Radius Arm Kit requires welding and drilling approximately 10 holes, with an estimated installation time of 5 to 6 hours. This kit is designed for professional or experienced installers comfortable with welding and suspension modifications. It is not compatible with Ram 3500 trucks equipped with factory air suspension.

The kit fits a broad range of Ram 3500 models from 2013 through 2018, including Big Horn, Laramie, Laramie Limited (2014–2015), Laramie Longhorn, Limited (2016–2018), Lone Star (2013–2015 and 2017), SLT, ST (2013), and Tradesman trims.

What's Included:

• Fabtech 7-inch Radius Arm Lift System components
• Dirt Logic 4.0 Resi Coilovers with stainless steel bodies and remote billet aluminum reservoirs
• Rear Dirt Logic shocks
• Support gussets for upper coil buckets and axle mounts
• Hardware and brackets necessary for installation

Ideal For:

This radius arm coilover conversion kit is ideal for Ram 3500 owners who demand superior off-road capability combined with a smooth on-road ride. It suits enthusiasts who want to run larger tires up to 38 inches while maintaining factory suspension geometry and strength. Perfect for heavy-duty use, towing, and rugged terrain, this system enhances both performance and durability for serious truck owners.

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.