The Jacob's Aquarium performance-reducing spring is made of SAE9254 cold-wound steel, the strongest material available. High tensile strength and phosphate powder coating provide excellent spring rate, are very durable and resist premature "sags". Jacob's Aquarium knows the result is a spring that specifically provides racing maneuvering, but maintains smooth and comfortable ride characteristics. Carefully matched spring speeds provide special handling, response, control and balance. These springs provide a generous drop into your car while maintaining a very "flexible" enough clearance to avoid bottoming out; lowering the center of gravity, improving performance and stability, and improving the appearance of the vehicle. (Note: Spring rate and amount of drop vary depending on vehicle application and chassis load.)

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