SUP9 Silicon Manganese Leaf Spring

With over six decades of manufacturing experience, Dobinsons offers specialized options for 4x4s, trucks, commercial, and utility vehicles, each custom-designed to meet specific load capacities and height requirements. These leaf springs are constructed from premium SUP9 silicon manganese spring steel, ensuring lasting performance. Key features include a tailored design for specific vehicle models and load/height needs, ISO9001:2008-certified manufacturing, and shot-peening and scragging processes to prevent sagging and extend service life. The springs incorporate military-wrapped eyes for enhanced safety in case of main leaf failure, and anti-friction inter-leaf liners to promote smoother, quieter operation. High-strength alignment clips with nylon insulators and Nyloc nuts further reduce wear and noise. These leaf springs are specifically designed for the Ford F-150, supporting a load capacity of 0-660 lbs. A crucial note for owners is that if your vehicle carries less than 400 lbs of constant load, you must remove one leaf from the pack to ensure proper function and ride quality. They provide approximately 1.2 inches of lift when used with 400-600 lbs of added constant rear-end weight. Professional installation services are available in the Las Vegas area.