Bump Stop Spring 700lb

The Landrum Springs Bump Stop Spring 700lb (model ST700) is a precision suspension component engineered to control chassis bottoming and prevent harsh impacts when your suspension reaches full compression. Whether you're running a lowered street car, a track-focused build, or a lifted truck with aggressive travel, bump stop springs protect critical drivetrain and frame components by providing a progressive cushion at the end of suspension stroke. This 700-pound-rate spring sits between your main coil spring and the suspension arm, absorbing energy that would otherwise transfer directly to welds, mounts, and geometry.

Landrum Springs manufactures bump stop springs using high-quality steel with a consistent spring rate to deliver repeatable, predictable compression characteristics across countless cycles. The 700lb rate means this spring compresses under 700 pounds of force, making it ideal for applications requiring moderate-to-firm bump compliance—common in sports cars, performance sedans, and vehicles with stiff base setups. The compact dimensions (2 x 1.95 x 2.2 inches) and lightweight design (0.38 lbs) ensure easy installation without adding unsprung mass, critical for maintaining suspension responsiveness and ride quality. The progressive nature of bump stop springs means they begin soft but increase resistance as compression increases, preventing a sudden jarring stop.

Mechanics and suspension tuners trust Landrum Springs bump stops when building track cars, autocross platforms, or street machines with modified ride heights and stiffer spring rates. The ST700 works in conjunction with your primary coil spring rate—pair it with stiffer main springs when lowering or upgrading your setup to maintain correct bump stop engagement. Proper bump stop selection prevents bottoming-induced geometry changes, reduces frame stress, and extends the life of shocks and mounts during aggressive driving. Installation typically requires removing wheel/strut assemblies and positioning the bump stop spring in the designated pocket or mount between the suspension arm and chassis. Always verify fitment with your specific vehicle platform and consult suspension geometry data before installation.