Our engineering staff has decades of experience in the design and tuning of performance suspension systems, including CART/Indy Cars, IMSA, SCCA, NASA, and SCORE competitors. These spring designs reflect our ability to develop a successful blend of appearance, handling capability, and ride quality. These springs feature increased spring rates for upgraded handling capabilities as well as progressively wound springs for superior ride quality. These springs are designed to work with OEM shocks but will benefit from using high performance shocks. We suggest Bilstein. Progress specifies only certified high-tensile SAE spring wire materials. Our springs are cold-wound on modern CNC coiling machines, then stress relieved, pre-set, and shot-peened for maximum durability.
Other Part Numbers:
Progress Technology #prg40.0635
WARNING: Cancer and Reproductive Harm
Progress Tech is a company that was established in 1995 and started as a distributor of suspension components. With years of experience developing their products, they have become a premier brand in the automotive tuning market and have satisfied thousands of customers everywhere.
The company’s slogan is "Advancing the Art." It has been their slogan ever since the company started, which guided them in their pursuit in becoming the leaders in today's highly competitive suspension aftermarket.
All their products are manufactured in-house, which allows them to maintain their products' consistency and high standards.
They design, develop, prototype, and test everything in their facility using a series of extensive procedures which enables the company to create products that would have both form and function.
The company is proud in offering quality-built products made entirely in the USA. Their facility is located in Anaheim, California, and houses some of the most sophisticated manufacturing tools and equipment available in the market today.
Their suspension products are being used by various champion racing teams from different racing disciplines such as the SCCA, IMSA, NASA, SCTA, Honda Challenge, and World Challenge.
Toyota Motorsports even use their products for their Scion TC Pace Cars and Celebrity Challenge vehicles.
If you are in the market for high-quality suspension components, then look no further as Progress Tech has got you covered. They offer a variety of suspension components that fit most vehicles made today. To know more about Progress Tech and what they can offer, visit Vivid Racing and check out their list of parts that fit your specific vehicle.
D2 Racing Pro Series Lowering Springs Chrysler 300C (EXC Auto Level Susp) 2011-2016 Dodge Challenger, Charger 2008-2012