The link between the wheels and the car's body is the suspension spring. The main job of this product is to make up for uneven road surfaces and guarantee extremely comfortable rides. It also makes sure that, regardless of the state of the road, the wheels are always in safe touch with it. It can be used in a variety of suspension designs, such as MacPherson struts, solid axles with trailing arms, independently sprung rear axles, and any SLA suspension systems using a spring or coil-over shock absorber configuration because of how little space it takes up. Suspension spring is an elastic object which is used to store mechanical energy.