Fabtech 5in Radius Arm System with Performance Shocks
2013–2018 Ram 3500 4WD with Factory Radius Arms
K3070
Overview:
The Fabtech 5-inch Radius Arm System with Performance Shocks is a premium suspension upgrade designed specifically for 2013 to 2018 Ram 3500 models equipped with factory radius arms. This system enhances the front suspension by replacing the stock radius arms with heavy-duty tubular replacements that improve caster angle, allowing for better handling and compatibility with oversized tires and lifted suspension setups. Ideal for Ram 3500 owners seeking increased off-road capability, improved ride quality, and superior durability, this kit delivers a balanced combination of strength and performance without compromising factory alignment specifications.
Fabtech’s innovative design retains the factory coil spring bow using angular steel spacers, preserving the unique Chrysler alignment geometry and ride comfort. The system also includes performance twin-tube shocks and a robust front track bar drop bracket to maintain proper axle positioning at increased ride heights. Rear suspension enhancements include block and U-bolt lift components with bump stop extensions, ensuring comprehensive suspension performance for lifted trucks.
Key Features:
This 5-inch Radius Arm System offers a range of advanced features engineered for durability, performance, and ease of installation:
- Replacement tubular radius arms with exclusive dimple die side plates for enhanced strength and rugged styling
- Increased caster angle to optimize handling with oversized tires and lifted suspension heights
- Angular steel spacers to maintain factory coil spring bow for proper alignment and ride quality
- Heavy-duty 1/4-inch thick steel front track bar drop bracket to center the axle under the vehicle
- Steel front bump stop extensions that prevent damage to springs and shocks, outperforming urethane bump stops
- Rear block and U-bolt lift system with bump stop extensions for balanced rear suspension lift
- Fabtech Performance Twin Tube shocks included for improved damping and ride control
- Compatible with tires up to 37 inches tall with minor trimming required
- No welding required; installation involves drilling 10 holes
Construction & Design:
Fabtech’s 5-inch Radius Arm System is engineered with high-strength tubular steel radius arms featuring exclusive dimple die side plates. This manufacturing process enhances structural integrity while providing a distinctive, aggressive appearance. The angular steel spacers are precision-designed to retain the factory coil spring bow, a critical element for maintaining Chrysler’s unique suspension geometry and ride characteristics. The front track bar drop bracket is fabricated from 1/4-inch thick steel to ensure durability and proper axle alignment at lifted heights.
Unlike conventional urethane bump stops that can deteriorate or fail under extreme conditions, Fabtech’s steel bump stop extensions offer a robust solution that protects suspension components from damage. The included twin-tube shocks are built to deliver consistent performance and improved ride quality across a variety of terrains.
Installation & Fitment:
Installation of the Fabtech 5-inch Radius Arm System is straightforward and designed for professional or experienced DIY mechanics. The process requires drilling 10 holes but does not involve any welding, simplifying the upgrade while maintaining structural integrity. Estimated installation time is approximately 4.5 hours.
This system fits 2013 through 2018 Ram 3500 models equipped with factory radius arms, including Big Horn, Laramie, Laramie Limited (2014–2015), Laramie Longhorn, Limited (2016–2018), Lone Star (2013–2015, 2017), SLT, ST (2013), and Tradesman trims. It supports tire sizes up to 37x13.50R20 with minor trimming required. Please note this kit is not compatible with factory air suspension systems.
What's Included:
- 5-inch tubular radius arms with dimple die side plates
- Angular steel coil spring spacers
- 1/4-inch thick steel front track bar drop bracket
- Steel front bump stop extensions
- Rear block and U-bolt lift components with bump stop extensions
- Fabtech Performance Twin Tube shocks
- All necessary hardware for installation
Ideal For:
This radius arm system is ideal for Ram 3500 owners who want to lift their trucks up to 5 inches while maintaining factory ride quality and alignment specifications. It is perfect for enthusiasts who run oversized tires up to 37 inches and require a durable suspension upgrade for off-road use, heavy-duty hauling, or towing. The kit is also suited for those seeking a rugged appearance combined with enhanced suspension performance without the need for welding during installation.
