Fabtech Radius Arm Kit

2014–2018 Ram 2500 4WD

K3140

Overview:

The Fabtech Radius Arm Kit is engineered specifically for 2014 to 2018 Ram 2500 4WD trucks, delivering a superior suspension upgrade that enhances ride quality and off-road capability. Designed to replace the factory radius arms, this kit works in conjunction with Fabtech’s coil spring suspension system and performance shocks to provide a smoother, more controlled ride both on and off the pavement. Ideal for Ram 2500 owners seeking improved handling, load capacity, and durability, this kit balances comfort with rugged performance.

Fabtech’s innovative design addresses the common issue of stiff factory springs by utilizing a straight coil spring design with patent-pending angled lower mounts, resulting in a noticeably smoother ride without sacrificing the truck’s factory load-carrying ability. Whether hauling heavy loads or tackling rough terrain, this radius arm kit ensures your Ram 2500 maintains stability and comfort.

Key Features:

Fabtech’s Radius Arm Kit offers advanced engineering and thoughtful features that set it apart from stock suspension components:

• Precision-engineered radius arms designed for 2014–2018 Ram 2500 4WD models
• Compatible with Fabtech’s coil spring suspension systems featuring straight front coil springs and dual-stage rear coil springs
• Includes performance shocks tuned for enhanced ride quality and off-road control
• Patent-pending angled lower mounts for improved spring geometry and smoother ride characteristics
• Maintains factory load-carrying capacity while reducing harshness and stiffness
• Supports tire sizes up to 37 inches with minor trimming required
• Durable construction designed to withstand heavy loads and rough terrain
• Optimized for use with wheels ranging from 17x9 to 22x9.5 with 5-inch backspacing
• Designed exclusively for diesel-powered Ram 2500 trucks (does not fit gas engines)

Construction & Design:

Fabtech’s Radius Arm Kit is crafted from high-strength materials to ensure long-lasting durability and performance under demanding conditions. The radius arms are precision-machined and powder-coated to resist corrosion and wear, providing reliable service life in harsh environments. The design incorporates Fabtech’s patent-pending angled lower mounts, which optimize coil spring positioning to reduce harshness and improve ride smoothness compared to the factory bowed springs.

The kit’s integration with Fabtech’s dual-stage rear coil springs allows the suspension to adapt dynamically to load conditions, offering a supple ride when unloaded and firm support when carrying heavy payloads. This engineering approach delivers the best of both worlds—comfort and capability—without compromising the truck’s factory specifications.

Installation & Fitment:

The Fabtech Radius Arm Kit is a direct fit for 2014 to 2018 Ram 2500 4WD models, including Big Horn, Laramie, Laramie Limited (2014–2015), Laramie Longhorn, Limited (2016–2018), Lone Star (2014–2015), Outdoorsman (2014–2016), Power Wagon, SLT, and Tradesman trims. Installation requires minor trimming to accommodate larger tire sizes up to 37 inches, depending on wheel choice.

Installation is recommended for experienced technicians or professional shops familiar with suspension upgrades. The kit is designed to work exclusively with diesel engine models and will not fit gas-powered Ram 2500 trucks.

What's Included:

• Front and rear radius arms engineered for Ram 2500 4WD
• Performance-tuned shocks
• Hardware and mounting components
• Installation instructions

Ideal For:

This radius arm kit is ideal for Ram 2500 owners who demand a smoother ride without sacrificing load capacity or off-road performance. It suits those who frequently haul heavy loads, tow trailers, or drive on challenging terrain and want a suspension system that adapts to varying conditions. Enthusiasts looking to upgrade their truck’s suspension for improved handling, comfort, and durability will find this kit an excellent choice.

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.