Trail vehicles (derived from a passenger car) require increased change in ride height. It results on an increased rebound travel position. In order to avoid new rear coil spring development and meet the increased rebound travel position, it has been proposed a new rear lower spring pad to ensure proper ride height. The main goal of this design was to develop a rear lower spring pad for a B-Car rear twist beam suspension concept to ensure the proper ride height, the spring positon during all suspension travel and noise isolation. This paper describes a proposed rear lower spring pad that was developed in thermoplastic polyurethane to have chemical and mechanical resistance and meet dynamics characteristics. Physical parts were evaluated and approved on vehicle and bench durability tests and virtual analysis was done to guarantee the pad position.