The Dayton Parts Twisted Z Leaf Spring for Kenworth / Peterbilt is a top-quality replacement option for your heavy duty vehicle. This spring boasts a full taper design and a spring width of 3.00", providing improved load carrying capacity and a smooth ride. With a single leaf and a spring pack thickness of 2.18", this leaf spring is capable of handling a maximum load capacity of 20,000 lbs at the pad. The front bushing is included, making installation quick and easy. The Twisted Z Leaf Spring is designed with an optimal arc to provide superior performance and ensure a proper fit for your Kenworth or Peterbilt truck. This rear, 1 leaf spring is built to last and is a reliable choice for any heavy duty application. Upgrade your suspension system with the Twisted Z Leaf Spring today. FleetPride is your First Click in Heavy Duty®.