Bump Stop Spring 4500lb

The Landrum Springs Bump Stop Spring 4500lb (model ST4500) is a heavy-duty suspension component engineered for vehicles requiring progressive spring rate control and bottoming resistance. With a spring rate of 4500 pounds per inch, this bump stop delivers consistent load management in demanding off-road, racing, and heavy-duty truck applications where suspension compression and impact absorption demand precision engineering.

This ST-series bump stop spring features a free length of 2.125 inches with a 1.96-inch outer diameter, making it compatible with standard suspension packages and aftermarket lift kits. The 4500 lb/in spring rate provides firm resistance to bottoming, protecting suspension geometry and chassis integrity during extreme compression events. Constructed from high-strength steel with a gray powder-coat finish for corrosion resistance, the ST4500 withstands salt exposure, moisture, and harsh environmental conditions while maintaining structural integrity. The compact 0.65-pound weight minimizes unsprung mass, supporting responsive suspension tuning.

Bump stop springs in the 4500 lb range serve trucks, SUVs, and performance vehicles operating near maximum payload capacity or pursuing aggressive terrain. These springs prevent metal-to-metal suspension contact during full compression, reducing noise and damage to shocks, frame mounts, and chassis components. The ST4500 is sold individually, allowing builders and suspension specialists to replace or upgrade one side at a time or integrate multiple units into custom multi-stage spring stacks.

Landrum Springs is recognized for precision-engineered suspension components across road racing, off-road competition, and heavy truck markets. The ST-series represents the company's commitment to repeatable, high-load spring performance where bottoming protection and spring rate consistency are non-negotiable.