Heavy Duty 5/8in Suspension Tube 18in

The ALLSTAR PERFORMANCE Heavy Duty 5/8in Suspension Tube 18in (ALL 57370) is a precision-engineered DOM steel suspension component designed for custom suspension builds, off-road vehicle modifications, and performance automotive applications. This 18-inch suspension tube features dual 5/8-18 threaded ports—right-hand female on one end and left-hand female on the opposite end—enabling seamless integration into symmetric or asymmetric suspension geometries. The 0.875-inch outer diameter and DOM (Drawn Over Mandrel) steel construction provide the structural rigidity required for load-bearing applications while maintaining light weight at just 1.8 pounds.

DOM steel delivers superior strength-to-weight characteristics compared to standard tubing, a critical advantage in suspension systems where unsprung mass directly affects ride quality, handling response, and load capacity. The dual female threading configuration eliminates the need for separate adapters or couplers, reducing assembly complexity and potential leak points in systems using threaded rod ends or ball joints. Black powder coat finish provides corrosion protection against moisture, salt spray, and UV exposure—essential for off-road vehicles operating in harsh environments or vehicles subjected to extended outdoor storage.

This suspension tube serves fabricators, off-road enthusiasts, and performance shops building custom A-arm assemblies, tie rod systems, and control arm linkages for trucks, Jeeps, race vehicles, and specialty builds. The 18-inch length accommodates wide-track or long-wheelbase applications where standard shorter tubes prove insufficient. Mechanics and chassis builders value ALLSTAR PERFORMANCE components for their dimensional consistency and straightness, critical factors when tolerances directly influence wheel alignment and suspension geometry. Whether assembling a rock-crawler suspension, drag racing chassis, or custom street rod suspension geometry, this tube provides the reliability and precision engineering required for systems where suspension integrity directly impacts safety and performance.