Bump Stop Spring 4000lb

The Landrum Springs Bump Stop Spring 4000lb (model ST4000) is a high-rate coil spring designed for suspension systems requiring precise load control and impact absorption. With a spring rate of 4000 lb/in, this steel component delivers consistent compression characteristics across demanding automotive and equipment applications where bump stops are critical to system stability and durability.

This bump stop spring features a 2.125-inch free length and 1.96-inch outer diameter, specifications that determine its fit and load-handling capacity within suspension assemblies. The 4000 lb/in rate places this spring in the stiffer range, suitable for applications requiring maximum support and minimal deflection under peak loads. Constructed from durable steel with a gray powder coat finish, the ST4000 resists corrosion and environmental degradation in harsh conditions. The compact form factor—weighing just 0.6 lbs—makes integration straightforward while maintaining the structural rigidity necessary for suspension geometry preservation.

Bump stop springs like the ST4000 are specified in heavy-duty trucks, off-road vehicles, industrial lift systems, and motorsport platforms where suspension travel limits and bottoming resistance are non-negotiable. Technicians and engineers select Landrum Springs products based on the brand's precision manufacturing and compliance with OEM specifications. The 4000 lb/in rate is typical for vehicles operating under load hauling, towing, or sustained off-pavement use where standard springs alone cannot manage impact energy effectively.