5in. x 16in x 325# Rear Spring

The LANDRUM SPRINGS 5in. x 16in x 325# Rear Spring is a performance leaf spring engineered for trucks, SUVs, and heavy-duty vehicles that demand reliable load support and handling consistency. Built by a manufacturer with decades of suspension engineering expertise, this rear spring delivers the progressive rate control necessary for vehicles carrying payload, towing, or running modified suspension geometry. Whether you're upgrading a daily driver, restoring a classic truck, or fine-tuning a performance build, this coil-rated spring provides the foundation for predictable chassis dynamics and extended component life.

At 325 pounds spring rate, this rear spring is calibrated to handle moderate to heavy loads without excessive deflection under acceleration, braking, or cornering stress. The 5-inch width and 16-inch length specification ensure proper load distribution across the axle housing while maintaining OEM mounting dimensions on compatible platforms. Landrum Springs' manufacturing process includes precision shot-peening and heat-treatment to maximize fatigue resistance, reducing the risk of premature failure from cyclic loading—a critical factor in suspension components. The 13.36-pound weight is optimized to deliver stiffness without adding unnecessary unsprung mass that would compromise ride quality or wheel articulation.

This spring is ideal for mechanics and enthusiasts upgrading aging factory suspension, tuning multi-link rear axle assemblies, or matching spring rates after lowering kit installation. Installation requires proper alignment tools and knowledge of spring perch geometry; professional installation is recommended to ensure correct load transfer and eliminate binding. Verify fitment by confirming your vehicle's original spring rate and mounting configuration against the 325# specification—mismatched rates will result in poor handling balance and accelerated wear on shocks or dampers.