The Complete Front & Rear Leveling Lift Kit/Spacers (40mm) for Prius 2009-18 is crafted from high-grade Polyurethane (PU), ensuring durability and long-lasting performance. This kit is compatible with the following Prius models: 2011 - 2018 Prius V / Prius + / Prius Alpha and 2009 - 2016 Prius. This kit includes four superior quality polyurethane spacers: two front polyurethane strut spacers (left and right) and two rear polyurethane spring/coil spacers (left and right), each providing a 40mm lift. The set also comes with six bolts to assist with the installation process. For installation, begin by dismounting the shock absorber. The spacer holes should align with the shock absorber mount plate pins. If the original pins are long enough, they do not need to be replaced; otherwise, use the longer pins provided in the kit. After assembling the shock absorber strut, install the spacer onto the shock absorber strut mount plate and mount it to the vehicle. Be sure to loosen and tighten the rubber bushings of the suspension arms when the car is on the wheels, not while lifted. No additional hardware is required for assembling the spacers. These polyurethane spacers are designed to sit on top of your vehicle's springs, as shown in the product image. The high-quality Polyurethane material offers superior durability compared to rubber and is resistant to rust, ensuring that the spacers maintain their integrity over time. The kit is easy to install, designed for a perfect fit, and provides an effective suspension setup. AUTOACER backs the quality of this product with a five-year warranty, covering manufacturer-related defects from the time of purchase. This warranty reflects the company's commitment to offering reliable, high-quality products.