Coil Over Springs, pair | Progress Technology
SHIPPING - RETURNS - WARRANTY - CANCELLATION POLICY
*** Market Conditions after 2020 have changed the landscape of automotive parts. Although we try to stock 1000's of items in our multiple warehouse and use multiple distribution channels, having back-orders are unavoidable in today's market. If you are in need of a product quickly, we suggest email, message, or call us for availability so that we may explore your options.
Email: Sales@Speedzoneweb.com
Call: 407-846-8430
Text: 407-749-6314
Frequently Asked Questions
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
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High-tensile chrome-silicon wire construction – Offers superior durability and spring consistency under extreme loads.
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Progressive and linear rate options available – Tuned to suit both street comfort and race-level precision.
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Lightweight design – Reduces unsprung weight for faster suspension response.
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Shot-peened and heat-treated finish – Prevents sagging and fatigue for long-term reliability.
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Powder-coated for corrosion resistance – Sleek, durable finish that stands up to the elements.
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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.
Our History
For 26 years Speedzone Performance LLC has been providing aftermarket car parts to Central Floridians and 1000's of customers online. What makes us different than all the other places online? We have 3 actual brick and mortar locations where were serve customers daily and find new ways to provide support and assistance to the automotive community at large. From our in house SPDZ1 Brand, to our constantly growing in stock inventory, we strive to make our customer service and ease of purchase stand out from the rest! We are also one of the largest automotive part financing providers anywhere in the United States, and continue to provide more options for our customers every year. We love what we do, and it shows in every product we sell and every new customer who becomes a part of our Speedzone Family.