5/8 Aluminum Radius Rod 21.5in Black

The 5/8 Aluminum Radius Rod 21.5in Black from Ti22 PERFORMANCE is a precision suspension component engineered for fabricators and builders tackling custom suspension geometry on street rods, race vehicles, and high-performance street machines. This radius rod serves as a critical control link in custom suspension systems, managing lateral forces and maintaining wheel alignment under acceleration, braking, and cornering loads. Whether you're building a dedicated track car or a show-quality street rod with modern suspension architecture, this component provides the structural foundation necessary for predictable handling and safety.

Constructed from high-strength aluminum, the 5/8 Aluminum Radius Rod features a 1.125-inch outer diameter tube with 5/8-18 female threads for secure rod-end or spherical bearing attachment at both termination points. The 21.5-inch length accommodates mid-wheelbase to long-wheelbase vehicles commonly found in custom hot rod and drag racing platforms. Black anodized finish provides corrosion resistance and a professional appearance while minimizing weight compared to steel alternatives—critical in applications where unsprung mass reduction directly impacts suspension response and tire contact patch consistency. At 0.8 pounds, this aluminum construction delivers strength-to-weight efficiency that steel radius rods cannot match.

This radius rod is ideal for fabricators building independent or semi-independent suspension systems on vintage platforms or purpose-built chassis where OEM components won't fit design parameters. Installation requires appropriate rod ends or spherical bearings with 5/8-18 female threads and careful suspension geometry calculation to ensure proper Ackermann steering angle and load transfer characteristics. Proper preload and bearing selection are essential—consult suspension geometry software or an experienced suspension tuner before final assembly. Compatible with custom welded frames and aftermarket suspension kits that utilize standard rod-end fastening conventions.