The Dayton Parts Twisted Z Leaf Spring is the top-quality leaf spring is designed to provide exceptional durability and reliability, even in the toughest conditions. With a full taper spring type and a spring width of 3.00", this leaf spring is built to handle heavy loads and provide excellent support to your vehicle. Featuring a single leaf design and a spring pack thickness of 2.18", this leaf spring has a spring capacity at pad of 20,000 lbs, making it ideal for heavy duty applications. The spring's unique twisted Z shape provides a good balance of flexibility and support, ensuring a smooth ride and maximum stability. Additionally, this leaf spring comes with a front bushing (RB-285) that ensures a secure fit and optimal performance. With its high-quality construction and exceptional performance, the Twisted Z Leaf Spring is the perfect choice for Kenworth and Peterbilt truck owners who demand the best. FleetPride is your First Click in Heavy Duty®.