UMI Performance 4052 A-Body Coil Spring Lowering Kit lb/in - 530/130

The UMI Performance 4052 is a complete front and rear coil spring lowering kit engineered specifically for GM A-Body muscle cars. This kit delivers a 1-inch drop with linear spring rates that eliminate the floating feeling while providing exceptional handling for Pro-Touring, autocross, and spirited street driving.

Key Features:

• Linear spring rates: 530 lb/in front, 130 lb/in rear for consistent handling characteristics
• Front springs wound from premium 5160 Chrome Silicon wire for superior strength and longevity
• Rear springs wound from premium 9254 Chrome Silicon wire
• Engineered for 1-inch lowering with small block Chevy, Pontiac 400, aluminum-head big block Chevy, and LS engine swaps
• Reduces body roll and improves cornering grip while maintaining ride comfort
• Durable black powder coat finish resists corrosion
• Proudly manufactured in the USA

Designed in collaboration with a leading Sprint Cup chassis engineer, these springs represent the pinnacle of A-Body suspension technology. The linear rate design provides predictable handling characteristics crucial for competitive autocross and Pro-Touring applications while the increased stiffness dramatically improves body control. Front springs are also suitable for full-weight big block applications when a 1/4-inch nose-down rake is desired. Note that lightened cars may require spring trimming to achieve proper ride height.