5/8 Aluminum Radius Rod 39in Black 1in OD

The 5/8 Aluminum Radius Rod 39in Black 1in OD is a precision suspension component engineered for high-performance marine and boating applications where chassis geometry and load distribution demand exacting tolerances. Built by MPD Racing, a manufacturer renowned for suspension tubing and structural components, this radius rod serves as a critical link in both freshwater and saltwater boat suspension systems. Whether you're upgrading a performance fishing vessel, tournament bass boat, or recreational cruiser, this aluminum radius rod provides the structural integrity needed to maintain precise wheel alignment and suspension geometry under dynamic water conditions.

Constructed from lightweight aluminum and finished in durable black anodizing, the 5/8 Aluminum Radius Rod features a 1-inch outer diameter with a full 39-inch length to accommodate mid-to-large boat suspension setups. The 5/8-18 female threads at each end allow secure mounting to suspension brackets, control arms, and frame pickup points without requiring welding or fabrication. Black anodized aluminum resists saltwater corrosion and UV degradation while maintaining the rigidity necessary for load-bearing applications, and the 1.3-pound weight keeps unsprung mass minimal—critical for boats that require responsive handling and fuel efficiency. The precision radius design ensures accurate geometry tuning for suspension travel and anti-dive characteristics.

This rod is ideal for boaters and marine technicians restoring or upgrading independent suspension systems on performance boats, custom tow vessels, and specialized marine platforms. The 39-inch length works best in mid-to-full-size boat frames where longer suspension arms are required to achieve proper geometry angles and anti-squat values. Installation requires basic mechanical skill and access to threaded mounting points compatible with 5/8-18 female threads; always verify frame and control arm specifications before ordering to ensure proper fitment and suspension geometry compliance.