Hellwig 04-21 Nissan Titan 2/4WD 2 Leaf Pro Series Helper Spring - Up To 2500lb Level Load Capacity

This is a special design, 2-leaf helper spring kit that provides up to 2500lb level load capacity. It features easy installation, over-axle mounting design, Silent Support System Bushings, and is tunable. The system is designed to enhance load stability and control, manufactured from heat-treated ASTM 5150 alloy spring steel. It utilizes progressive rate leaves that do not affect the ride quality when unloaded, and unique Silent Ride polyurethane stability blocks to apply tension to the U-bolts, ensuring a quiet ride and stabilizing the helper spring during reverse or rebound modes. Heavy-duty hardware and self-adjusting suspension stabilizers are also included.