Ultimate high-performance racing springs give you additional precision tuning options for your XRAY model racing car! Developed through extensive testing and racing experience, these racing springs were designed and precision-crafted to have a more progressive rate than standard XRAY racing springs. The new progressive XRAY spring sets were designed to give you an additional range of choices to fine tune your car.
All four springs are individually measured, controlled, inspected and identically-matched to provide equal damping characteristics at all four corners of your chassis, providing predictability and consistency that you need to help you lead the pack.
