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SDI is proud to offer Hyperco’s line of UTV Performance Spring Kits that boost your UTV or Side-by-Side to the next level. Designed to improve the overall ride quality and performance of your vehicle, these kits feature the race winning and trail dominating spring technology that Hyperco is known for. Each kit comes with the Hypercoil springs and hardware components (crossover nuts and sliders) needed for a complete suspension spring upgrade. Hyperco products are engineered, manufactured, and tested in the USA.