The Powerflex USA Rear Subframe Front Bushing Insert - PFR54612 is a performance upgrade for the rear subframe of a vehicle. It is designed to improve handling and stability by reducing movement and flex in the subframe. This insert is made of high-quality polyurethane material, which is more durable and resistant to wear compared to the stock rubber bushings. It is designed to fit directly into the existing subframe bushings, making installation quick and easy. This product is ideal for those looking to improve the overall driving experience and performance of their vehicle.