Radius Rod 5/8in Alum 20in

The Radius Rod 5/8in Alum 20in (ALL56807-20) is a precision-engineered suspension component designed for custom vehicle builds, fabrication projects, and high-performance suspension geometry work. As a mechanic and enthusiast, you know that radius rods—also called trailing arms or control arms in certain applications—are critical for managing lateral movement, maintaining axle control, and preventing rear-end squat during acceleration. This aluminum construction offers the ideal balance between strength and weight savings, making it an essential choice for racers, lowered builds, and street performance applications where stock suspension geometry requires modification.

Manufactured from durable aluminum with a polished finish, this radius rod features a 1.125-inch outer diameter tube and 5/8-18 inch female threads at each end for secure, repeatable connection to frame mounting points and chassis brackets. The 20-inch length accommodates mid-size and full-size vehicle platforms where stock trailing arm geometry needs replacement or adjustment. Aluminum construction reduces unsprung mass compared to steel alternatives, improving suspension responsiveness and reducing strain on shocks and springs. The polished surface resists oxidation and provides a professional appearance whether visible or hidden behind body panels, while the threaded ends ensure precise alignment adjustability—critical for dialing in pinion angle, ride height, and suspension geometry in custom and race applications.

This component is ideal for fabricators, restoration shops, and serious enthusiasts building custom independent or solid-axle rear suspensions. Installation requires proper welding or bolting to frame and axle housing using Grade 8 fasteners and appropriate bungs or mounting brackets; alignment and geometry verification with a suspension specialist is strongly recommended after installation. Whether you're upgrading a vintage truck, building a street rod, or fine-tuning a race car's rear geometry, the Radius Rod 5/8in Alum 20in delivers the precision and durability needed for demanding suspension work. Weighing just 0.88 lbs, it's light enough for competition use while maintaining the structural integrity required for daily driving or track duty.