Progress Technology's engineering staff has over forty years of combined experience in the design and tuning of performance suspension systems, including CART/Indy Cars, IMSA, SCCA, and SCORE competitors. Progress Technology's engineering staff are enthusiasts, and know how to build and tune performance automobiles. The Progress Technology Sport Spring designs are a product of their engineering and manufacturing expertise.
Manufactured from certified high-tensile SAE spring materials, utilizing sound design and manufacturing principles, and individually tested toour stringent tolerances. The PROGRESS Lifetime Warranty assures enthusiasts of our exceptional quality products.
Cold-wound using computer-numeric-control (CNC) automated equipment. Stress-relieved, pre-set, and shot-peened for maximum precision and durability inspected to our exacting specifications.
Lowers 2" Front & Rear