Fabtech Radius Arm Kit

2019–2023 Ram 2500 / 2020 Ram 3500

K3184DL

Overview:

The Fabtech Radius Arm Kit is a comprehensive suspension upgrade designed specifically for Ram 2500 models from 2019 to 2023 and Ram 3500 models from 2020. This kit enhances the factory suspension system by incorporating Fabtech’s signature tubular radius arms with dimple die side plates, delivering superior strength and increased caster for lifted trucks running oversized tires. Featuring Dirt Logic 4.0 coilovers, this kit offers exceptional ride quality both on and off-road while maintaining factory load capacity through a dual rate rear spring design. It is the ultimate solution for Ram owners seeking improved suspension performance, durability, and ride comfort.

Key Features:

Fabtech’s Radius Arm Kit combines innovative engineering and high-quality components to elevate your Ram’s suspension capabilities. Key features include:

• Exclusive tubular radius arms with dimple die side plates for enhanced strength and durability
• Built-in 1 degree of caster with adjustable alignment cams allowing an additional 1.5 to 2 degrees of caster adjustment
• Heavy-duty 1/4" thick steel front and rear track bar drop brackets to properly center axles at new ride height
• Massive stainless steel Dirt Logic 4.0 coilovers with reinforced mounting brackets for superior suspension damping
• Dual rate rear coil springs that balance smooth highway ride quality with factory load carrying capacity
• Radius arms offset to allow full turning radius with wide tires up to 37-inch diameter
• Coilover conversion bolt-on design for straightforward installation using factory coil buckets
• Includes a free 5-year/60,000-mile powertrain warranty for added peace of mind

Construction & Design:

Fabtech’s radius arms are constructed from high-strength tubular steel featuring dimple die side plates, a hallmark of Fabtech’s commitment to durability and quality. This design not only reinforces the arms against bending and fatigue but also allows for precise caster angle adjustments to optimize handling and tire wear. The Dirt Logic 4.0 coilovers are built with stainless steel bodies and heavy-duty 1/4" thick steel mounting brackets, including gussets for added rigidity. The lower coilover mounts are welded to the axle housing and reinforced with cross support gussets to maintain structural integrity under demanding conditions. The dual rate rear springs are engineered to provide a progressive spring rate, ensuring a comfortable ride when unloaded and firm support when carrying heavy loads.

Installation & Fitment:

This Fabtech Radius Arm Kit is designed for direct bolt-on installation on Ram 2500 models from 2019 through 2023 and Ram 3500 models from 2020. The coilover conversion utilizes factory upper coil buckets with added gussets for strength, while the lower mounts weld to the axle housing. Heavy-duty track bar drop brackets are included to realign the axles at the new ride height, ensuring proper vehicle tracking and handling. Minor trimming may be required for certain tire and wheel combinations, especially when running 37-inch tires with 17x9, 18x9, or 20x9 wheels with 5-inch backspacing. This kit is not compatible with standard cab models, gas engines, factory air suspension, or Power Wagon models for certain years.

What's Included:

• Fabtech tubular radius arms with dimple die side plates
• Front Dirt Logic 4.0 stainless steel coilovers with reinforced mounting brackets
• Rear dual rate coil springs
• Heavy-duty 1/4" thick steel front and rear track bar drop brackets
• Adjustable alignment cams for caster adjustment
• All necessary hardware for installation
• Installation instructions

Ideal For:

This radius arm kit is ideal for Ram 2500 and 3500 owners who demand enhanced suspension performance for lifted trucks running oversized tires. It suits enthusiasts who require a balance of off-road capability, on-road comfort, and factory load carrying capacity. Whether you’re upgrading for rugged trail use, heavy-duty towing, or improved daily driving dynamics, this kit provides a durable and reliable suspension solution.

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.