UMI Performance 4048 Coil Spring Set Pro-Tour Linear Rate 530/130 lb/in

UMI Performance 4048 Coil Spring Set delivers modern handling and a crisp, firm ride while maintaining your classic muscle car's factory appearance. Engineered in partnership with a leading Sprint Cup chassis engineer, this premium spring kit eliminates the common "floating" feeling associated with A-body vehicles and provides consistent, predictable handling characteristics ideal for Pro-Tour, Auto-X, and spirited street driving.

Key Features:

• Linear spring rates: 530 lb/in front, 130 lb/in rear for consistent handling and reduced body roll
• Front springs wound from premium 5160 Chrome Silicon wire for maximum durability
• Rear springs wound from premium 9254 Chrome Silicon wire
• Engineered ride height level with standard SBC, Pontiac 400, aluminum head/intake BBC, and LS engines
• Also suitable for full-weight Big Block applications with 1/4" nose-down rake
• Durable black powder coat finish resists corrosion
• Manufactured in the USA with premium materials for consistent performance

The linear rate design provides a firm yet comfortable ride that's perfect for corner carving, autocross competition, and general cruising. These springs maintain consistent rates over their service life, ensuring your car sits properly for years to come. Suitable for Pro-Tour builds, Auto-X competition, and performance street applications. Note: Lightened vehicles may require spring trimming for optimal ride height.