Unlock precision handling and race-proven performance with Progress Technology Coilover Springs — engineered for tuners, racers, and performance enthusiasts who demand total control. Sold as a matched pair, these coilover springs are crafted from high-tensile chrome-silicon wire, delivering consistent spring rates, lightweight strength, and exceptional longevity. Whether you’re upgrading your street setup, dialing in your track suspension, or refreshing your coilover kit, Progress Technology coilover springs provide responsive handling, reduced body roll, and predictable cornering behavior. Designed and manufactured in the USA, every spring is precision-wound, heat-treated, and shot-peened to meet the most demanding motorsport standards. Performance & Features High-tensile chrome-silicon wire construction – Offers superior durability and spring consistency under extreme loads. Progressive and linear rate options available – Tuned to suit both street comfort and race-level precision. Lightweight design – Reduces unsprung weight for faster suspension response. Shot-peened and heat-treated finish – Prevents sagging and fatigue for long-term reliability. Powder-coated for corrosion resistance – Sleek, durable finish that stands up to the elements. Sold as a matched pair – Perfect for coilover rebuilds, performance upgrades, or custom applications. Why Choose Progress Technology? Proudly made in the USA, Progress Technology has been a leading name in performance suspension since 1995 — designing and manufacturing premium components for enthusiasts and professionals alike. Their coilover springs are trusted by racers worldwide for consistent performance, unmatched craftsmanship, and track-proven reliability. Take your suspension tuning to the next level with Progress Technology Coilover Springs — the perfect foundation for serious performance.
