The Progress 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 their 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 such as Tokico also found on the Fab9Tuning site.
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.
These springs are designed to work with OEM shocks but will benefit from using high performance shocks such as Tokico also found on the Fab9Tuning site.
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.
- Front drop: 0.5" --- Rear drop: 0.5"
- Front rate: 126 lbs/in --- Rear rate: 116 lbs/in
- All spring kits are powdercoated metallic gray.
1 Review
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Great mod
These springs are a definite improvement. The ride isn't affected in my opinion, but the handling is better, the car is more composed, less dive and squat. Together with 20mm spacers makes the car's stance way better. Fab9tuning also sold them at a great price, win-win.
