The product is a set of OEM rear suspension coil springs designed specifically for the 2015-2023 Ford Mustang GT. These coil springs, with the manufacturer part number FR3C-5560-AC, are manufactured by the factory or original equipment manufacturer (OEM) to ensure quality and compatibility with the vehicle. They provide the necessary support and cushioning for the rear suspension of the Ford Mustang GT, ensuring a smooth and comfortable ride for drivers.