UMI Performance 4050 Coil Spring Lowering Kit 1 Inch Drop A-Body

The UMI Performance 4050 Coil Spring Lowering Kit delivers a precision-engineered 1-inch drop for A-body muscle cars, eliminating the floating feeling while maintaining excellent ride quality. Designed in collaboration with a leading Sprint Cup chassis engineer, this premium spring kit represents the pinnacle of suspension engineering for Pro-Tour, autocross, and spirited street driving applications.

Premium Construction:

• Front springs wound from 5160 Chrome Silicon premium wire with linear 530 lb/in rate
• Rear springs wound from 9254 Chrome Silicon premium wire with linear 130 lb/in rate
• Linear spring rates provide consistent, predictable handling characteristics
• Durable black powder coat finish for corrosion resistance
• Proudly manufactured in the USA

Performance Benefits:

• Increased spring stiffness dramatically reduces body roll
• Eliminates the vague, disconnected feeling common with stock A-body suspension
• Linear rates deliver firm yet comfortable ride quality suitable for daily driving
• Engineered for optimal performance in autocross and Pro-Tour competition

Fitment Notes: Ride height is engineered for 1-inch lowering with standard small block Chevy, Pontiac 400, aluminum-headed big block Chevy, and LS engine swaps. Lightened cars may require spring trimming for proper ride height. Front springs are also suitable for full-weight big block applications when a nose-down rake is desired.

UMI Performance uses only the finest materials and manufacturing processes to ensure your car sits properly and handles predictably for years to come. When you demand the best in muscle car suspension components, accept no substitutes.