5/8 Steel Tube 18in 7/8in OD

The 5/8 Steel Tube 18in 7/8in OD from ALLSTAR PERFORMANCE is a precision suspension component engineered for fabricators, chassis builders, and performance mechanics who demand reliable structural integrity in custom suspension geometry. This tube serves as a core building block for control arms, drag links, and axle tubes in street rods, race cars, and modified trucks where frame-to-suspension articulation must remain rock-solid under load and acceleration stress.

Manufactured from high-strength steel with black zinc finish for corrosion resistance, this 5/8-18 female-threaded tube measures 18 inches in length with a 7/8-inch outer diameter, balancing wall thickness for buckling resistance without excess weight. The 5/8-18 thread specification allows for standard rod-end ball joints and spherical bearings commonly used in adjustable suspension linkages, enabling quick geometry changes and maintenance without replacing the entire tube assembly. At just 1.22 lbs, the relatively light construction minimizes unsprung mass while the black zinc coating provides lasting protection against road salt and brake dust oxidation.

This tube is ideal for hot rodders, circle-track competitors, and off-road suspension designers building independent front suspensions (IFS) or custom rear-axle mounting systems where adjustability and durability are non-negotiable. Professional shops trust ALLSTAR tubes for their consistency in wall thickness and thread accuracy, eliminating binding and play in suspension joints. Installation requires standard rod-end adapters and basic welding or fastening per your specific geometry design; ensure all connection points are rated for your vehicle's gross weight and intended use.