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 rate: 180 lbs/in --- Rear rate: 115 lbs/in
- Front drop: 1.3" --- Rear drop: 1.3"
- All spring kits are powdercoated metallic gray
- Drop amount varies by 0.25" depending on shocks used.
1 Review
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Great mod
These springs are a definite improvement over stock. There is less dive and squat, the cars feels more composed and to me, the ride quality is the same or better than stock. They lowered the car just enough to greatly improve its stance. I also installed 20mm spacers to help with the horrible factory offset on these cars. Now the car handles better and looks better, win-win.
