UMI Performance 4050R Rear 1-inch Lowering Springs for Select 1967-1988 GM A-Body & G-Body (130 lb/in)

Fits select 1967-1988 GM A-Body and G-Body vehicles, including Buick Regal and Skylark, Chevrolet Chevelle, Malibu, and Monte Carlo, Oldsmobile Cutlass, and Pontiac GTO and Grand Prix.

Standard factory suspensions often suffer from a vague, "floating" sensation during high-speed cornering or spirited driving. UMI Performance engineered these rear lowering springs to eliminate that instability while providing a purposeful 1-inch drop. Designed in collaboration with a leading Sprint Cup chassis engineer, these springs utilize a 130 lb/in linear rate to ensure consistent handling characteristics whether you are on the autocross course or a long-distance cruise.

Each spring is wound from premium 9254 Chrome Silicon (CrSi) wire, a material chosen for its superior fatigue resistance and ability to maintain a consistent ride height over years of use. The linear rate prevents the unpredictable weight transfer associated with progressive springs, making them an ideal choice for Pro-Touring builds and street performance. Finished in a durable black powder coat, these springs are built to withstand the elements while providing a significant upgrade over aged OE coils.

• Manufacturer Part Number: 4050R
• Drop Height: 1.000 in.
• Spring Rate: 130 lb/in (Linear)
• Material: 9254 Chrome Silicon Premium Wire
• Finish: Tough Black Powder Coat
• Country of Origin: USA
• Application: Rear suspension