Bump Stop Spring 900lb

The Bump Stop Spring 900lb (Model ST900) is a precision suspension component engineered for vehicles requiring progressive spring rate tuning and chassis compliance management. Crafted by Landrum Springs, a trusted manufacturer in the suspension aftermarket, this bump stop is essential for builders and mechanics working with lifted trucks, lowered cars, or custom suspension geometries where travel limits need controlled compression without harsh bottoming. Whether you're protecting expensive coilovers, managing aggressive drop, or refining ride quality on a modified platform, this 900lb bump stop delivers predictable damping at the critical final inches of suspension travel.

The 900lb spring rate specification indicates a progressive spring constant that engages as the suspension compresses toward full droop, absorbing energy and preventing metal-to-metal contact between chassis and suspension frame. Bump stops work by compressing progressively as the suspension reaches its stroke limit, creating a soft yet firm barrier that protects shock absorbers, linkage, and frame components from impact damage. The compact 2.1 x 2.05 x 2.7 inch profile and lightweight 0.43 lb construction make this unit ideal for applications where space is limited—common in lifted suspensions, coilover conversions, and custom independent suspension builds. Landrum Springs' manufacturing standards ensure consistent performance across temperature ranges and repeated compression cycles, critical for vehicles seeing track use, off-road duty, or frequent dynamic loading.

This bump stop spring is ideal for mechanics and enthusiasts installing aftermarket suspension kits, replacing worn bump stops in lifted trucks, or fine-tuning ride quality in lowered street cars and performance platforms. Installation typically requires access to the suspension mounting point—either replacing an OEM bump stop or adding a secondary progressive stage depending on your specific suspension geometry. Verify mounting orientation and clearance during installation to ensure proper engagement without pre-load. Compatible with a wide range of custom and lifted applications where travel management and progressive rate control are priorities, the ST900 delivers proven durability and predictable performance for suspension systems demanding precision engineering.