The LESJOFORS 4442100 rear coil spring is engineered to meet or exceed original equipment specifications, ensuring optimal performance and durability for heavy-duty vehicles. Manufactured from high-strength steel, this spring undergoes rigorous heat treatment and shot peening processes to enhance its resilience and fatigue resistance. A multi-layered corrosion-resistant coating, comprising zinc phosphate and epoxy powder coat, provides exceptional protection against environmental elements, extending the spring's lifespan and reducing maintenance costs. The spring is pre-set and thoroughly tested to guarantee a precise fit and reliable performance, contributing to a smoother, more stable ride and improved vehicle handling. By maintaining the integrity of your fleet's suspension system, the LESJOFORS 4442100 rear coil spring helps prevent premature wear and tear on other critical components, thereby enhancing overall operational efficiency and reducing downtime.